Jonathan Losos
@jblosos.bsky.social
Evolutionary biologist, herpetologist, cat lover.
Amazon has decided to unload my books at bargain basement prices!
October 31, 2025 at 5:11 AM
Amazon has decided to unload my books at bargain basement prices!
Spoil Islands in Florida: an Opportunity for Anole Experiments in the Wild www.anoleannals.org/2025/10/30/s...
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 s…
www.anoleannals.org
October 30, 2025 at 1:47 PM
Spoil Islands in Florida: an Opportunity for Anole Experiments in the Wild www.anoleannals.org/2025/10/30/s...
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...
Feline: Photographs
Amazon.com: Feline: Photographs: 9781419773648: Flach, Tim, Losos, Jonathan: Books
www.amazon.com
October 21, 2025 at 4:41 PM
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...
Rebreathing Semi-aquatic Anoles: Just a Scuba Tank… or Something More? www.anoleannals.org/2025/10/15/r...
Rebreathing Semi-aquatic Anoles: Just a Scuba Tank… or Something More?
Over the past several years, semi-aquatic anoles experienced a bit of viral fame for “scuba diving,” a nickname for their ability to rebreathe a bubble of air over their nostrils while diving…
www.anoleannals.org
October 15, 2025 at 1:31 PM
Rebreathing Semi-aquatic Anoles: Just a Scuba Tank… or Something More? www.anoleannals.org/2025/10/15/r...
3-legged lizards can thrive against all odds, challenging assumptions about how evolution works in the wild
theconversation.com/3-legged-liz...
theconversation.com/3-legged-liz...
3-legged lizards can thrive against all odds, challenging assumptions about how evolution works in the wild
Most lizards probably don’t survive devastating injuries. But a new study documents 122 cases of limb loss across 58 species – these exceptions shine a new light on natural selection.
theconversation.com
October 13, 2025 at 2:02 PM
3-legged lizards can thrive against all odds, challenging assumptions about how evolution works in the wild
theconversation.com/3-legged-liz...
theconversation.com/3-legged-liz...
awesome photos! Check out who wrote the text! www.cbsnews.com/video/how-a-...
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.
www.cbsnews.com
October 4, 2025 at 4:57 PM
awesome photos! Check out who wrote the text! www.cbsnews.com/video/how-a-...
More on Anole Eye Spots www.anoleannals.org/2025/09/04/m...
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: it’s a sign of stress. Reader Seth Whaland has provid…
www.anoleannals.org
September 4, 2025 at 1:35 PM
More on Anole Eye Spots www.anoleannals.org/2025/09/04/m...
Anolis cybotes, the Hispaniolan Stout Anole floridensis.com/2025/08/26/a...
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 an…
floridensis.com
August 26, 2025 at 2:16 PM
Anolis cybotes, the Hispaniolan Stout Anole floridensis.com/2025/08/26/a...
New Orleans' Brown Anoles Can Tolerate Extraordinary Amounts of Lead in Their Blood www.anoleannals.org/2025/08/23/n...
New Orleans’ 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 Plaisance splaisance@tulane.edu Tulane researchers found…
www.anoleannals.org
August 24, 2025 at 2:45 PM
New Orleans' Brown Anoles Can Tolerate Extraordinary Amounts of Lead in Their Blood www.anoleannals.org/2025/08/23/n...
Fight Fiercely Harvard
open.substack.com/pub/perilous...
open.substack.com/pub/perilous...
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
open.substack.com
August 22, 2025 at 3:20 PM
Fight Fiercely Harvard
open.substack.com/pub/perilous...
open.substack.com/pub/perilous...
Israel's Gaza War Has Made Me Ashamed to Be a Jewish Zionist
open.substack.com/pub/perilous...
open.substack.com/pub/perilous...
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
open.substack.com
August 7, 2025 at 1:02 PM
Israel's Gaza War Has Made Me Ashamed to Be a Jewish Zionist
open.substack.com/pub/perilous...
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...
July 23, 2025 at 3:55 PM
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 www.anoleannals.org/2025/07/19/t...
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…
www.anoleannals.org
July 19, 2025 at 3:34 PM
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
open.substack.com/pub/perilous...
open.substack.com/pub/perilous...
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
open.substack.com
July 19, 2025 at 2:24 PM
Some Thoughts on Trumpism and Soviet Communism on a Visit to Prague
open.substack.com/pub/perilous...
open.substack.com/pub/perilous...
Non-native Herps Still Increasing in the Most Heavily Invaded Herp Community in the World. www.anoleannals.org/2025/07/06/n...
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 …
www.anoleannals.org
July 6, 2025 at 1:06 PM
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 www.anoleannals.org/2025/06/03/h...
How I built a 6 foot long stainless steel anole lizard sculpture: the Movie
Read about Steve Nielsen, the artist, here.
www.anoleannals.org
June 3, 2025 at 10:42 PM
How I built a 6 foot long stainless steel anole lizard sculpture: the Movie www.anoleannals.org/2025/06/03/h...
Dewlap Drama in the Slender Anole: a Tale of Two Throats www.anoleannals.org/2025/06/01/d...
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 …
www.anoleannals.org
June 2, 2025 at 1:25 AM
Dewlap Drama in the Slender Anole: a Tale of Two Throats www.anoleannals.org/2025/06/01/d...
Caiman crocodilus, the Spectacled Caiman floridensis.com/2025/05/27/c...
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…
floridensis.com
May 27, 2025 at 2:42 PM
Caiman crocodilus, the Spectacled Caiman floridensis.com/2025/05/27/c...
A Three-Legged Lizard Mystery www.anoleannals.org/2025/05/25/a...
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…
www.anoleannals.org
May 25, 2025 at 2:54 PM
A Three-Legged Lizard Mystery www.anoleannals.org/2025/05/25/a...
Reposted by Jonathan Losos
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...
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...
source.washu.edu
April 29, 2025 at 5:41 PM
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...
Reposted by Jonathan Losos
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!
May 15, 2025 at 1:23 AM
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!
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...
www.federalregister.gov/documents/20...
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" ...
www.federalregister.gov
May 18, 2025 at 2:15 PM
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...
www.federalregister.gov/documents/20...