Il y a plus de 550 millions d’années, les premiers animaux peuplaient déjà les océans terrestres sous des formes très différentes de celles d’aujourd’hui. Longtemps dominés par des organismes fixés au fond marin et se reproduisant probablement par clonage, ces écosystèmes auraient connu une...
Researchers have obtained the first-ever photographs of the Cozumel dwarf fox (Urocyon sp.), an elusive dwarf fox living on the Caribbean island of Cozumel, off Mexico’s Yucatán Peninsula. Captured in September 2023, the images provide the first confirmed evidence since 2001 that the elusive animal still survives on the island.
Elon Musk, on the verge of becoming the world's first trillionaire, is whipping up anti-immigration tensions amid ongoing riots in Belfast, Northern Ireland. Following a knife attack in the city on Monday, Musk declared support for Restore Britain, a hard-right populist political party that advocates for large-scale migrant deportation in the UK. He reposted statements from party leader Rupert Lowe calling for "a vast number of people" to be forced out of the country, as well as a promise from Lowe to "prosecute officials and politicians who knowingly placed dangerous third world savages in our communities." "This is the way," Musk added to …
DOVER, DELAWARE — JUNE 11, 2026 — Tilebox today announced infrastructure for verifiable AI workflows on Earth observation data, giving teams a way to use agents through governed data, repeatable […]
Apesar dos progressos significativos na conectividade de fibra de alta velocidade em Portugal, um novo estudo mostra que que muitos utilizadores continuam a enfrentar problemas de latência, bloqueios, paragens de carregamento e quebras de ligação.
The Cozumel dwarf fox, a rare species previously known only from secondhand reports and fossil records, has been discovered alive on Cozumel, a small Caribbean island off the eastern coast of the Yucatán Peninsula.
Researchers published the announcement in Neotropical Biology and Conservation, describing the rescue and identification of the rare dwarf fox before it was released back into the wild. They caution that this rare species, previously believed extinct, faces extreme danger from a host of threats.
The Cozumel Dwarf Fox
As one of the rarest canids on the planet, the species had never before been documented alive by scientists. The Cozumel dwarf fox (Urocyon sp.) is a close relative of the gray fox (Urocyon cinereoargenteus), which is found on the Mexican mainland. After several millennia of isolation on the island—possibly predating Maya settlement—the Cozumel fox underwent insular dwarfism, evolving to only 60–80% the size of its mainland relatives.
Evidence for the animal has been remarkably scarce, and while subfossil remains provided conclusive proof that the species once existed, there had not even been a secondhand report since 2001, leading many researchers to assume it was extinct.
That changed on September 14, 2023, when members of the public reported a disoriented fox along a coastal highway near kilometer marker 29.
Responders from the Fundación de Parques y Museos de Cozumel recovered the animal and cared for it for three days while monitoring its health. On September 17, 2023, the fox was released into the Laguna Columbia State Reserve, where it would be protected from traffic and other hazards.
The sighting marks the first time the Cozumel fox has been formally documented by scientists and recognized as taxonomically distinct.
The Cozumel dwarf fox, believed long extinct, was finally recorded by scientists. Credit: Rafael Chacón
Cozumel Fox Habitat
Although the sparse evidence of these creatures may not be enough to conclusively map their habitat, the researchers have some idea where the Cozumel fox typically resides.
“Historical sightings have been concentrated around the community of El Cedral and near the entrance of Punta Sur Ecological Park, which is where this photographic record also took place,” lead author Travis Bayer of Pathos Wildlife told The Debrief. “No sightings have ever been observed further north than El Cedral, which leads us to believe that may be the extent of their range on the island, which would also be very concerning due to the already limited space on an island.”
“If their home ranges are restricted to the Southern end of the island, they may have home ranges around 100 km2,” Bayer continued. “If they associate with only wetland/mangrove habitats, the size gets considerably smaller and more concerning for their conservation, as those habitats mainly only occur along the coastline and are at high risk for development for restaurants and resorts.”
Staying Hidden
Given that Cozumel is a popular tourist destination known for its beaches and resorts, it may seem surprising that an animal the size of a fox could remain undetected for so long. Bayer says part of the explanation lies in the island’s difficult terrain and the species’ elusive behavior.
“Cozumel is home to many different terrestrial ecosystems, many of which are not easily accessible either,” Bayer explained. “Habitats like the mangrove forests and wetlands are almost impenetrable to us, but to a fox, easily traversable.”
Image Credit: Rafael Chacón
“Also, not that many people are out there looking for this animal, as the public awareness of it was extremely low, and the scientific investment was limited to one primary publication and a few brief mentions in others,” he added.
Additionally, the combination of grey foxes’ typical elusiveness, their nocturnal habits, and the highway cutting through their habitat being closed at night all combine to make the species easy to miss.
Preserving the Cozumel Fox
“In collaboration with a team of local biologists, led by Rafael Chacón, we have begun developing an emergency conservation action plan for the Cozumel fox aimed at locating remaining individuals, estimating population size, identifying critical habitat, and determining immediate threats,” Bayer said.
Ensuring that the species does not disappear again is now a top priority. Researchers consider the fox critically endangered, with its limited habitat threatened by development, invasive species, and natural disasters.
Several introduced animals also pose significant risks. These include invasive boas released during a 1971 film production that have since spread across the island. Domestic dogs and cats may also threaten the fox through competition, predation, or disease transmission. In addition, predators such as ocelots and margays were introduced as exotic pets before eventually being released into the wild.
“Using thermal drone surveys, large-scale camera trap networks, and other advanced monitoring technologies, we aim to rapidly generate the data needed to guide immediate conservation intervention,” Bayer said. “Simultaneously, we are collecting the evidence necessary to formally describe the animal as a new and distinct species deserving of critically endangered recognition and legal protections.”
“One of the most important takeaways from this research is that species can quietly disappear without the world even realizing they are gone,” Bayer concluded.
“We often think extinction is something dramatic and obvious, but in reality, it can happen gradually and silently, especially for rare species living in remote or understudied habitats.”
Ryan Whalen covers science and technology for The Debrief. He holds an MA in History and a Master of Library and Information Science with a certificate in Data Science. He can be contacted at ryan@thedebrief.org, and follow him on Twitter @mdntwvlf.
Vous l’avez peut-être remarqué chez votre chat. Une équipe internationale confirme aujourd’hui, sur la base de plusieurs centaines de vidéos YouTube, que les chats préfèrent dormir sur le côté gauche.Scientists @CellPressNews reviewed 408 YouTube clips of sleeping cats and found 2/3 curled up on...
A former xAI engineer is suing the company and SpaceX, alleging he was fired for raising AI safety concerns about Grok days before SpaceX's historic IPO.
Microsoft's Xbox division will be hit with significant layoffs next month, according to people familiar with Microsoft's plans.
The company has been preparing for the layoffs internally for weeks, with Xbox CEO Asha Sharma hinting about "making hard choices" last month. Sources suggest the cuts could even involve a studio closure, or changes to the Xbox studio lineup. In a recent Giant Bomb episode, rumors of 1,000 layoffs for Microsoft's Xbox division were mentioned. Bloomberg also reported today that the cuts would be "major," and involve budget cuts for marketing and other areas of Microsoft's Xbox business.
A Los Angeles-based startup has raised $5 million to fund an in-orbit computing demonstration next year, ahead of plans to deploy more than 100,000 orbital data centers to meet surging demand for AI infrastructure.
La France va créer ou étendre neuf réserves biologiques forestières sur son territoire, dont la plus importante est située en Guyane, portant au total sur une surface supplémentaire de 157.000 hectares de forêt protégée, a annoncé le ministère de la Transition écologique.
Le Continent blanc n'a été découvert qu'au début du XIXe siècle. Des hommes n'explorent donc l'Antarctique que depuis deux siècles et ses nombreux secrets ne sont pas encore percés. Mais les moyens de détection modernes nous aident dans ce but, comme le montre une découverte récente qui a des...
The RAMageddon crisis has got Microsoft rethinking its Xbox console hardware business. Xbox CEO Asha Sharma and Xbox strategy chief Matthew Ball have both revealed this week that Microsoft is reevaluating plans for its next-generation Project Helix console and exploring "radically different" console business models in the meantime.
"We are working very hard to rethink everything that we can about Helix, which is a console we are committed to shipping, and we are very cognizant of the ways in which we need to change as a company to make sure it is affordable, to make sure that it's flexible," said Ball in an interview with The Game Business …
Login
