Jonathan Losos

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

Israel's Gaza War Has Made Me Ashamed to Be a Jewish Zionist
open.substack.com/pub/perilous...

At long last, The Cat's Meow featured in the New York Times...sort of. www.nytimes.com/.../books/re...

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 erne…

The Alluring Anoles of Alto Velo www.anoleannals.org/2025/07/19/t...

Some Thoughts on Trumpism and Soviet Communism on a Visit to Prague With Trump’s tariffs and immigration police, there are echoes of Eastern Europe’s authoritarian past

Some Thoughts on Trumpism and Soviet Communism on a Visit to Prague
open.substack.com/pub/perilous...

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 herper’s paradise with at least 63 exotic herps recorded in the state in addition …

Non-native Herps Still Increasing in the Most Heavily Invaded Herp Community in the World. www.anoleannals.org/2025/07/06/n...

How I built a 6 foot long stainless steel anole lizard sculpture: the Movie Read about Steve Nielsen, the artist, here.

<i>How I built a 6 foot long stainless steel anole lizard sculpture</i>: the Movie www.anoleannals.org/2025/06/03/h...

Dewlap Drama in the Slender Anole: a Tale of Two Throats Color us intrigued! In the world of Anolis lizards, the dewlap—a colorful throat fan used for communication—is one of the most iconic features. It’s been flaunted, flashed, and filmed in countless …

Dewlap Drama in the Slender Anole: a Tale of Two Throats www.anoleannals.org/2025/06/01/d...

Caiman crocodilus, the Spectacled Caiman Last updated Tuesday 27 May 2025. This is a shorter post because, to date, I’ve only encountered and photographed one non-native Spectacled caiman in Florida. Native to the lower portion of C…

Caiman crocodilus, the Spectacled Caiman floridensis.com/2025/05/27/c...

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 m…

A Three-Legged Lizard Mystery www.anoleannals.org/2025/05/25/a...

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...

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 🧪 🐕 🐈 💀 source.washu.edu/2025/04/copy...

I’m beyond proud to share that I’ve 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!

The new rule would limit the Act to protecting species from intentional take, i.e., killing. This would be catastrophic for endangered species. While intentional take certainly threatens wild populations, habitat modification is the primary driver of biodiversity loss. Act today--deadline is Monday!

Rescinding the Definition of “Harm” 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" ...

USFWS and NOAA have a proposed rescinding the definition of “harm” under the Endangered Species Act. Presently, “harm” 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...

Anolis cannibalis I live in Bermuda. Many years ago, my daughter and I witnessed a large male Graham’s anole devour a small female, same species. We were horrified as we had watched these particular individua…

<i>Anolis cannibalis</i> www.anoleannals.org/2025/05/17/a...

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 c…

Understanding Animal Behaviour, a Non-Fiction Graphic Novel www.anoleannals.org/2025/05/16/u...

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...

“The 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,” said @jblosos.bsky.social .... “I don’t think anyone would have expected that.” source.washu.edu/2025/04/copy...

Anolis garmani, the Jamaican Giant Anole Admittedly, I’m 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 (and…

Anolis garmani, the Jamaican Giant Anole floridensis.com/2025/05/06/a...

Singapore National Parks Studying Impact of Introduced Brown Anoles (and the Greenhouse Frog) From the pages of 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 …

Singapore National Parks Studying Impact of Introduced Brown Anoles (and the Greenhouse Frog) www.anoleannals.org/2025/05/02/s...

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.

www.earth.com/news/our-lov...

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. I’m looking to do a similar thing this …

Looking for Simple Anole Marking Methods www.anoleannals.org/2025/03/20/l...

Invasive Agama Decreases Number of Brown Anoles, Maybe Increases Disease Threat to Humans from the pages of Phys.org: How a turf war between lizards in Florida impacts mosquitoes and maybe human health by Denise Hruby Credit: Pixabay/CC0 Public Domain Mosquitoes might be the bane of a s…

Invasive Agama Decreases Number of Brown Anoles, Maybe Increases Disease Threat to Humans www.anoleannals.org/2025/03/09/3...

Picture of Jonathan Losos with an anole over his left eye, and pictures of cats in the background.

ATX peeps...Mark your calendars! @jblosos.bsky.social is giving the Texas Biodiversity Center Distinguished Speaker Series talk at UT Austin on May 1, 2025 at 2:30 pm in NHB 1.720 (on the UT campus). Come talk cats!
live-cns-bdc.pantheonsite.io/.../cats-meo....

Anoles of South America Part 4: Threats, Conservation, and the Path Forward Now that I have reviewed the diversity of South American anoles north and south of the Andes, I will discuss conservation issues in this region. I will start by identifying some of the major threat…

Anoles of South America Part 4: Threats, Conservation, and the Path Forward www.anoleannals.org/2025/03/02/a...

Time to Get to Work…Freedom Is Worth Fighting For As predicted, the Trump presidency presents an unprecedented threat to liberal democracy in America. The time for complacency and resignation is over.

Time to Get to Work…Freedom Is Worth Fighting For

SICB 2025: How Green Anoles Adapt to Local Climates Green anoles (Anolis carolinensis) are everywhere in the southeastern United States, thriving in habitats that range from the balmy warmth of Miami to the cooler, more seasonal climates of Tennesse…

#sicb2025

Shades of Hitchcock's Film "The Birds" Explore how crows rebounded after the West Nile Virus, adapted to urban life, and developed the ability to recognize and remember human faces. Learn about their intelligence, surprising behaviors, and...

wellbeingintl.org/shades-of-hi...

Jhan Carlos Salazar explores the peaks and valleys of evolution Jhan Carlos Salazar has climbed great heights in his six years as a graduate student at WashU. Working with Jonathan Losos, the William H. Danforth Distinguished University Professor and director of t...

@jhancsalazar.bsky.social

Archie, the cat aka “A-Train”