Jonathan Losos
@jblosos.bsky.social
š¤ 948
š„ 593
š 102
Evolutionary biologist, herpetologist, cat lover.
www.anoleannals.org/2026/07/10/r...
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Review of Poeās Guide to the Anolis Lizards (Anoles) of Mainland Central and South America
I received a copy of Steven Poeās āguideā to the mainland anoles. The book includes summaries of 240 species, copious photographs, range maps, and chapters on anole biology and identifyā¦
https://www.anoleannals.org/2026/07/10/review-of-poes-guide-to-the-anolis-lizards-anoles-of-mainland-central-and-south-america/
10 days ago
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reposted by
Jonathan Losos
Steve Brusatte
3 months ago
Thank you St. Louis. As a midwestern boy it was awesome to finally visit the famous
@stlcountylibrary.bsky.social
and give a book talk on The Story of Birds. Hosted by my pal the eminent evolutionary biologist Jonathan Losos
@jblosos.bsky.social
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Trumpās Iran Fiasco Shows The Lunacy Of Pulling Out Of The Obama Nuclear Deal In The First Place
open.substack.com/pub/perilous...
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Trumpās Iran Fiasco Shows The Lunacy Of Pulling Out Of The Obama Nuclear Deal In The First Place
Trump made the world a lot less safe by withdrawing from the JCPOA.
https://open.substack.com/pub/perilous/p/trumps-iran-fiasco-shows-the-lunacy?r=1m8blq&utm_campaign=post&utm_medium=email
23 days ago
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Robert Ricklefs - in memoriam
dynamicecology.wordpress.com/2026/06/11/r...
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Robert Ricklefs ā in memoriam
Robert Ricklefs, a giant of ecology, passed away on Sunday. It is hard to overstate the extensive impact Bob had on the field. He was elected a member of the National Academy of Sciences in the US,ā¦
https://dynamicecology.wordpress.com/2026/06/11/robert-ricklefs-in-memoriam/
30 days ago
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Invaders Donāt Come Alone: Rethinking Biological Invasions Through Co-invasion
www.anoleannals.org/2026/06/14/i...
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Invaders Donāt Come Alone: Rethinking Biological Invasions Through Co-invasion
Species invasions are usually studied one at a time, but ecosystems rarely have that luxury. This project began with a simple frustration: while reading about invasive predators, invasive competitoā¦
https://www.anoleannals.org/2026/06/14/invaders-dont-come-alone-rethinking-biological-invasions-through-co-invasion/
about 1 month ago
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The Worst Passover
open.substack.com/pub/perilous...
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The Worst Passover
This year, the Jewish celebration of liberation from oppression, respect for the plight of refugees and commitment to peace felt hollow and incoherent due to Israelās wars in Iran and Lebanon
https://open.substack.com/pub/perilous/p/the-worst-passover?utm_campaign=post-expanded-share&utm_medium=web
4 months ago
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Diversification and Evolutionary Dynamics in Tropical Montane Regions
www.anoleannals.org/2026/03/14/d...
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Diversification and Evolutionary Dynamics in Tropical Montane Regions
Much like when I was an undergrad, I found myself trying to decide what to do for my PhD thesis, as I had to change or rethink most of it after COVID happened. Months before my proposal, I came acrā¦
https://www.anoleannals.org/2026/03/14/diversification-and-evolutionary-dynamics-in-tropical-montane-regions/
4 months ago
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What Grenadian Anoles Revealed about How Animals Establish Territories
www.anoleannals.org/2026/03/13/w...
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What Grenadian Anoles Revealed about How Animals Establish Territories
There are a lot of classic studies on anoles. Some of the most groundbreaking started from a simple observation and someoneās curiosity. Judy Stamps seems to have had lots of these āhuhā¦ā moments. ā¦
https://www.anoleannals.org/2026/03/13/what-grenadian-anoles-revealed-about-how-animals-establish-territories/
4 months ago
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Animals in Advertising
wellbeingintl.org/animals-in-a...
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Animals in Advertising
According to the National Football League (NFL), this yearās Super Bowl LX, the final game of the NFL season that determines the world champions of American football, was viewed in the US by nearly 12...
https://wellbeingintl.org/animals-in-advertising/
5 months ago
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It Has Taken a While, But Americans Are Finally Waking Up to the Dangers of Trump
open.substack.com/pub/perilous...
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It Has Taken a While, But Americans Are Finally Waking Up to the Dangers of Trump
The killing of protesters in Minneapolis by ICE and the public lies about what happened seem to be a turning point
https://open.substack.com/pub/perilous/p/it-has-taken-a-while-but-americans?utm_campaign=post&utm_medium=email
6 months ago
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Not sure how this works, but Feline is now almost 50% off thanks to a "coupon" on Amazon
www.amazon.com/Feline-Photo...
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Feline: Photographs
Amazon.com: Feline: Photographs: 9781419773648: Flach, Tim, Losos, Jonathan: Books
https://www.amazon.com/Feline-Photographs-Tim-Flach/dp/141977364X/ref=sr_1_1?adgrpid=186573263916&dib=eyJ2IjoiMSJ9.9iyqeUlTvOHUjOBh1KZu3FKyKWWpK8JRT5qD5_M4gmVFj0RsAUYBJR1DLjygMB50H9aOBqfvBcVjLQ_EDJ_ta0jiX0BASh5ocY6-rd8FCuvAU9JuD55aqVVx9wMBEjsmO8-Mh7sRGFYRM5je-D57Smdya9kiCt3w_TILogV4_E-OJO2ape7kSvrSErsvahrq.oDvCC8oJIVNKAzwqMX3K9Sbk85cDGFpBm1M29F85kZE&dib_tag=se&hvadid=779768860052&hvdev=c&hvexpln=0&hvlocphy=9022879&hvnetw=g&hvocijid=1203282801503523507--&hvqmt=e&hvrand=1203282801503523507&hvtargid=kwd-2439615148690&hydadcr=22535_13730684_8212&keywords=tim+flach+feline&mcid=87de996f102c3391a2d893ca5e1ea24f&qid=1768403144&sr=8-1
6 months ago
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Where Do Green Anoles Go to Sleep? Night Life in the Ogasawara Islands
www.anoleannals.org/2026/01/08/w...
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Where Do Green Anoles Go to Sleep? Night Life in the Ogasawara Islands
Sleep is one of the most fundamental states for animals, including humans and wildlife. When people travel to unfamiliar places, one of their first concerns is often where they will sleep that nighā¦
https://www.anoleannals.org/2026/01/08/where-do-green-anoles-go-to-sleep-night-life-in-the-ogasawara-islands/
6 months ago
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In Venezuela, We Will Now See if Trump Can Do Anything That Is Hard
open.substack.com/pub/perilous...
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In Venezuela, We Will Now See if Trump Can Do Anything That Is Hard
Trump has mainly done easy things in foreign affairs that require little skill or follow-through. Now we will see if he up to the challenge of reconstituting Venezuela.
https://open.substack.com/pub/perilous/p/in-venezuela-we-will-now-see-if-trump?utm_campaign=post&utm_medium=email
7 months ago
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Pointy Snouted Green Anole Has a Thing for Star Fruit
www.anoleannals.org/2026/01/02/p...
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Pointy Snouted Green Anole Has a Thing for Star Fruit
And who could blame the little green ladyāstar fruit are delicious! Miriam Lipsky of Miami explains: āThe star fruits (carambola) are indeed from my yard! Ā I was picking them to give toā¦
https://www.anoleannals.org/2026/01/02/pointy-snouted-green-anole-has-a-thing-for-star-fruit/
7 months ago
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Itās publication day! āTeaching and Mentoring Writers in the Sciencesā
scientistseessquirrel.wordpress.com/2025/12/31/i...
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Itās publication day! āTeaching and Mentoring Writers in the Sciencesā
Ok, weāre seriously excited ā not for tonightās fireworks, but because after several years of work, our new book is officially published today! Thatās right ā Teaching and Mentoring Writers iā¦
https://scientistseessquirrel.wordpress.com/2025/12/31/its-publication-day-teaching-and-mentoring-writers-in-the-sciences/
7 months ago
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Big and Beautiful: Gift-Worthy Holiday Art Books
https://www.nytimes.com/2025/12/07/books/review/holiday-art-books.html
8 months ago
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The Moral Push-back Against Trumpās Immoral Foreign Policy
open.substack.com/pub/perilous...
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The Moral Push-back Against Trumpās Immoral Foreign Policy
It turns out that abandoning Ukraine and Hegsethās kill order donāt play well even in our chaotic, transactional world
https://open.substack.com/pub/perilous/p/the-moral-push-back-against-trumps?utm_campaign=post&utm_medium=email
8 months ago
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Feline 40% off!!!
www.amazon.com/Feline-Photo...
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Feline: Photographs
Amazon.com: Feline: Photographs: 9781419773648: Flach, Tim, Losos, Jonathan: Books
https://www.amazon.com/Feline-Photographs-Tim-Flach/dp/141977364X/ref=cm_cr_arp_d_product_top?ie=UTF8
8 months ago
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Amazon has decided to unload my books at bargain basement prices!
9 months ago
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Spoil Islands in Florida: an Opportunity for Anole Experiments in the Wild
www.anoleannals.org/2025/10/30/s...
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Spoil Islands in Florida: an Opportunity for Anole Experiments in the Wild
Invasive species are a growing problem across our increasingly globalized planet. They are often adept at establishing stable population sizes very quickly, which allows them to outcompete native sā¦
https://www.anoleannals.org/2025/10/30/spoil-islands-in-florida-an-opportunity-for-anole-experiments-in-the-wild/
9 months ago
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If you look carefully, you'll see that the text is written by yours truly. I won't comment on that, but ther photographs are extraordinary!
www.amazon.com/Feline-Photo...
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Feline: Photographs
Amazon.com: Feline: Photographs: 9781419773648: Flach, Tim, Losos, Jonathan: Books
https://www.amazon.com/Feline-Photographs-Tim-Flach/dp/141977364X/ref=sr_1_1?crid=3DXOCJ5UFBKOU&dib=eyJ2IjoiMSJ9.9iyqeUlTvOHUjOBh1KZu3Eu-NwU7bRrHhK_H3TyGC1SsM-FgvB4Gd20TNldlII6VyKfGECMQGNGTwVAXilG9rmAF6qBxZWhDDCkDpqyBrMZLpDcHmj4pcyncdmRpZkuEUUgur2Olapcd1BcWuUlTDcJsLerCDssoVeiVdb9YWd64lMU6reDS-CzCiVX8lXnBMLVZlZqGT3Frv_vUMVz-pvaD8RblykXty0qx7OgblzA.GCVbPIHt4fHcySjegdlLCo9srVSb28SdVSGHrVW7s2g&dib_tag=se&keywords=tim+flach&qid=1760195715&s=books&sprefix=tim+flach%2Cstripbooks%2C128&sr=1-1
9 months ago
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Rebreathing Semi-aquatic Anoles: Just a Scuba Tankā¦ or Something More?
www.anoleannals.org/2025/10/15/r...
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Rebreathing Semi-aquatic Anoles: Just a Scuba Tankā¦ or Something More?
Over the past several years, semi-aquatic anoles experienced a bit of viral fame for āscuba diving,āĀ a nickname for their ability to rebreathe a bubble of air over their nostrils while divingā¦
https://www.anoleannals.org/2025/10/15/rebreathing-semi-aquatic-anoles-just-a-scuba-tank-or-something-more/
9 months ago
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āPiratesā of the Caribbean: The luck and pluck of three-legged lizards
Researchers from Washington University in St. Louis and the Georgia Institute of Technology study lizards who have lost limbs to understand how omnipresent the forces of natural selection can be, and ...
https://source.washu.edu/2025/10/pirates-of-the-caribbean-the-luck-and-pluck-of-three-legged-lizards/
9 months ago
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3-legged lizards can thrive against all odds, challenging assumptions about how evolution works in the wild
theconversation.com/3-legged-liz...
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3-legged lizards can thrive against all odds, challenging assumptions about how evolution works in the wild
Most lizards probably donāt survive devastating injuries. But a new study documents 122 cases of limb loss across 58 species ā these exceptions shine a new light on natural selection.
https://theconversation.com/3-legged-lizards-can-thrive-against-all-odds-challenging-assumptions-about-how-evolution-works-in-the-wild-262467?utm_source=bluesky&utm_medium=bylineblueskybutton
9 months ago
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See Stunning Feline Photography Revealing the Science of Cats
Tim Flach captures his fascination with the science of cats in stunning photographs from his new book Feline
https://www.scientificamerican.com/article/stunning-cat-photos-reveal-feline-science/
10 months ago
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awesome photos! Check out who wrote the text!
www.cbsnews.com/video/how-a-...
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How a wildlife photographer found one of his biggest challenges with house cats
Wildlife photographer Tim Flach has been around the world to get the perfect shot. But his latest book, titled "Feline," may have been one his biggest challenges.
https://www.cbsnews.com/video/how-a-wildlife-photographer-found-one-his-biggest-challenges-with-house-cats/
10 months ago
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More on Anole Eye Spots
www.anoleannals.org/2025/09/04/m...
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More on Anole Eye Spots
Some green anoles sometimes temporarily develop a black spot behind their eyes. We had a great post on why this happens in 2011. Spoiler: itās a sign of stress. Reader Seth Whaland has providā¦
https://www.anoleannals.org/2025/09/04/more-on-anole-eye-spots/
11 months ago
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Anolis cybotes, the Hispaniolan Stout Anole
floridensis.com/2025/08/26/a...
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Anolis cybotes, the Hispaniolan Stout Anole
Last updated on Tuesday 26 August 2025.Florida is home to an array of non-native Anolis species. Some of these introduced species are extremely widespread, such as Anolis sagrei (the Cuban brown anā¦
https://floridensis.com/2025/08/26/anolis-cybotes/
11 months ago
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New Orleans' Brown Anoles Can Tolerate Extraordinary Amounts of Lead in Their Blood
www.anoleannals.org/2025/08/23/n...
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New Orleansā Brown Anoles Can Tolerate Extraordinary Amounts of Lead in Their Blood
Tulane University reports: Lead-resistant lizards in New Orleans could hold clues to combating lead poisoning August 20, 2025 9:00 AM Stacey PlaisanceĀ
[email protected]
Tulane researchers foundā¦
https://www.anoleannals.org/2025/08/23/new-orleans-brown-anoles-can-tolerate-extraordinary-amounts-of-lead-in-their-blood/
11 months ago
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Fight Fiercely Harvard
open.substack.com/pub/perilous...
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Fight Fiercely Harvard
Settling with the federal government may be the right call for Harvard, but doing so will be a blow to American democracy
https://open.substack.com/pub/perilous/p/fight-fiercely-harvard?r=1d2uek&utm_campaign=post&utm_medium=web&showWelcomeOnShare=false
11 months ago
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Israel's Gaza War Has Made Me Ashamed to Be a Jewish Zionist
open.substack.com/pub/perilous...
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Israel's Gaza War Has Made Me Ashamed to Be a Jewish Zionist
Israel's fight against Hamas started as a just war, but is now a moral travesty
https://open.substack.com/pub/perilous/p/israels-gaza-war-has-made-me-ashamed?r=1d2uek&utm_campaign=post&utm_medium=web&showWelcomeOnShare=false
12 months ago
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Leiocephalus carinatus, the Northern Curly-tailed Lizard
Last updated on Friday 25 July 2025.At some point in the 1940s, somebody decided to intentionally release a number of non-native Northern curly-tailed lizards (Leiocephalus carinatus armouri, speciā¦
https://floridensis.com/2025/07/25/leiocephalus-carinatus/
12 months ago
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At long last, The Cat's Meow featured in the New York Times...sort of.
www.nytimes.com/.../books/re...
12 months ago
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The Alluring Anoles of Alto Velo
www.anoleannals.org/2025/07/19/t...
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The Alluring Anoles of Alto Velo
Although I have not been a prolific poster on AA, I have enjoyed contributing articles about the obscure and rarely seen anoles of the Greater Antilles and Lucayan archipelagos, such as Anolis erneā¦
https://www.anoleannals.org/2025/07/19/the-alluring-anoles-of-alto-velo/
about 1 year ago
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Some Thoughts on Trumpism and Soviet Communism on a Visit to Prague
open.substack.com/pub/perilous...
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Some Thoughts on Trumpism and Soviet Communism on a Visit to Prague
With Trumpās tariffs and immigration police, there are echoes of Eastern Europeās authoritarian past
https://open.substack.com/pub/perilous/p/some-thoughts-on-trumpism-and-soviet?r=1m8blq&utm_campaign=post&utm_medium=web&showWelcomeOnShare=false
about 1 year ago
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Non-native Herps Still Increasing in the Most Heavily Invaded Herp Community in the World.
www.anoleannals.org/2025/07/06/n...
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Non-native Herps Still Increasing in the Most Heavily Invaded Herp Community in the World.
There truly is never a dull moment in South Florida, especially for those of us who love herps. South Florida is a herperās paradise with at least 63 exotic herps recorded in the state in addition ā¦
https://www.anoleannals.org/2025/07/06/non-native-herps-still-increasing-in-the-most-heavily-invaded-herp-community-in-the-world/
about 1 year ago
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<i>How I built a 6 foot long stainless steel anole lizard sculpture</i>: the Movie
www.anoleannals.org/2025/06/03/h...
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How I built a 6 foot long stainless steel anole lizard sculpture: the Movie
Read about Steve Nielsen, the artist, here.
https://www.anoleannals.org/2025/06/03/how-i-built-a-6-foot-long-stainless-steel-anole-lizard-sculpture-the-movie/
about 1 year ago
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Dewlap Drama in the Slender Anole: a Tale of Two Throats
www.anoleannals.org/2025/06/01/d...
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Dewlap Drama in the Slender Anole: a Tale of Two Throats
Color us intrigued! In the world of Anolis lizards, the dewlapāa colorful throat fan used for communicationāis one of the most iconic features. Itās been flaunted, flashed, and filmed in countless ā¦
https://www.anoleannals.org/2025/06/01/dewlap-drama-in-the-slender-anole-a-tale-of-two-throats/
about 1 year ago
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Caiman crocodilus, the Spectacled Caiman
floridensis.com/2025/05/27/c...
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Caiman crocodilus, the Spectacled Caiman
Last updated Tuesday 27 May 2025. This is a shorter post because, to date, Iāve only encountered and photographed one non-native Spectacled caiman in Florida. Native to the lower portion of Cā¦
https://floridensis.com/2025/05/27/caiman-crocodilus/
about 1 year ago
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A Three-Legged Lizard Mystery
www.anoleannals.org/2025/05/25/a...
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A Three-Legged Lizard Mystery
Anole Annals has featured a series of posts on three-legged lizards over the years (e.g., here and here). Now we need help. Some time around 2017, April Brown contributed a photo of a brown anole mā¦
https://www.anoleannals.org/2025/05/25/a-three-legged-lizard-mystery/
about 1 year ago
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reposted by
Jonathan Losos
Leah
about 1 year ago
Here's a story about how breeding has smushed so many pet skulls that Persians and pugs resemble eachother more than their wild ancestors. Research from
@jblosos.bsky.social
š§Ŗ š š š
source.washu.edu/2025/04/copy...
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Copycat evolution
Biologist Jonathan Losos, in Arts & Sciences, has documented evidence of a kind of "copycat" evolution between extremely short-faced breeds of cats and dogs. Generations of intentional breeding have l...
https://source.washu.edu/2025/04/copycat-evolution/
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reposted by
Jonathan Losos
Jhan C. Salazar, PhD
about 1 year ago
Iām beyond proud to share that Iāve officially earned my Ph.D. and served as Student Marshal for the School of Medicine at WashU! Grateful to my advisor,
@jblosos.bsky.social
, my committee, and everyone who supported me. And now, on to the next chapter!
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USFWS and NOAA have a proposed rescinding the definition of āharmā under the Endangered Species Act. Presently, āharmā includes habitat modifications, such as those due to land-use change, invasive species, pollution. The new rule would be much more limited
www.federalregister.gov/documents/20...
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Rescinding the Definition of āHarmā Under the Endangered Species Act
The U.S. Fish and Wildlife Service (FWS) and the National Marine Fisheries Service (NMFS) (collectively referred to as the Services or we) are proposing to rescind the regulatory definition of "harm" ...
https://www.federalregister.gov/documents/2025/04/17/2025-06746/rescinding-the-definition-of-harm-under-the-endangered-species-act#open-comment
about 1 year ago
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<i>Anolis cannibalis</i>
www.anoleannals.org/2025/05/17/a...
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Anolis cannibalis
I live in Bermuda. Many years ago, my daughter and I witnessed a large male Grahamās anole devour a small female, same species. We were horrified as we had watched these particular individuaā¦
https://www.anoleannals.org/2025/05/17/anolis-cannibalis/
about 1 year ago
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Understanding Animal Behaviour, a Non-Fiction Graphic Novel
www.anoleannals.org/2025/05/16/u...
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Understanding Animal Behaviour, a Non-Fiction Graphic Novel
I dislike textbooks. I still remember the dismay as an undergraduate student of spending all that money to buy hugely expensive textbooks. And if there was any sense of excitement on cracking the cā¦
https://www.anoleannals.org/2025/05/16/understanding-animal-behaviour-a-non-fiction-graphic-novel/
about 1 year ago
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reposted by
Jonathan Losos
Leah
about 1 year ago
āThe skulls of a Pug or a Pekingese and a Persian cat are more similar to each other than either is to their ancestors, the wolf and the North African wildcat,ā said
@jblosos.bsky.social
.... āI donāt think anyone would have expected that.ā
source.washu.edu/2025/04/copy...
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Copycat evolution
Biologist Jonathan Losos, in Arts & Sciences, has documented evidence of a kind of "copycat" evolution between extremely short-faced breeds of cats and dogs. Generations of intentional breeding have l...
https://source.washu.edu/2025/04/copycat-evolution/
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Anolis garmani, the Jamaican Giant Anole
floridensis.com/2025/05/06/a...
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Anolis garmani, the Jamaican Giant Anole
Admittedly, Iām playing a bit of an a-hole card by choosing Anolis garmani to be my first Anolis species on the current iteration of Floridensis. The Jamaican giant anole is a non-native (andā¦
https://floridensis.com/2025/05/06/anolis-garmani/
about 1 year ago
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Singapore National Parks Studying Impact of Introduced Brown Anoles (and the Greenhouse Frog)
www.anoleannals.org/2025/05/02/s...
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Singapore National Parks Studying Impact of Introduced Brown Anoles (and the Greenhouse Frog)
From the pages ofĀ The Straits Times: NParks monitoring whether brown anole, greenhouse frog pose threat to native species Nparks said that it is aware of the presence of the brown anole (left) and ā¦
https://www.anoleannals.org/2025/05/02/singapore-national-parks-studying-impact-of-introduced-brown-anoles-and-the-greenhouse-frog/
about 1 year ago
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www.earth.com/news/our-lov...
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Our love for 'baby faces' reshaped cat and dog evolution
Persian cats and pug dogs evolved nearly identical flat faces due to human breeding. This convergence makes them look similar.
https://www.earth.com/news/our-love-for-baby-faces-reshaped-cat-and-dog-evolution/
about 1 year ago
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Looking for Simple Anole Marking Methods
www.anoleannals.org/2025/03/20/l...
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Looking for Simple Anole Marking Methods
Hello fellow anole enthusiasts! Last year I marked Green Anoles (Anolis carolinensis) in my backyard using a permanent marker to chart their population size. Iām looking to do a similar thing this ā¦
https://www.anoleannals.org/2025/03/20/looking-for-simple-anole-marking-methods/
over 1 year ago
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