Furtastic Series Banner

The 'mouse deer' lives

Not a fictional species.
 By 
Mark Kaufman
 on 
Original image replaced with Mashable logo
Original image has been replaced. Credit: Mashable

They're not a fictional species: Mouse deer still roam the Vietnamese woods.

In 2017 and 2018, biologists set camera traps in Vietnam's coastal forests to potentially spot the evasive species, not seen in 29 years. The plan worked. Researchers from Global Wildlife Conservation, working with the Southern Institute of Ecology, Leibniz Institute for Zoo and Wildlife Research, and the local community, captured 275 photos of the mouse deer, formally called the Silver-backed Chevrotain.

These are the first photos of the chihuahua-sized species alive in the wild, animals first described by scientists in 1910, but last seen in 1990.


You May Also Like

"They're pretty elusive," said Andrew Tilker, Global Wildlife Conservation's Asian species officer.

Tilker suspects these herbivores wisely steer clear of any potential danger in the woods, but scurry out to make their living off of forest vegetation and fruit — when it's safe.

While there's now proof the mouse deer lives, this doesn't mean the population — vulnerable to habitat encroachment like any wild species — is well-numbered or healthy.

"It might be that it's found across a wide part of Vietnam, or this might be one of a couple populations," said Tilker. "We really have no idea."

(Tilker and his team are prudently keeping specific mouse deer locations hidden, should any nefarious interests go looking for them.)

Behold, the mouse deer:

Original image replaced with Mashable logo
Original image has been replaced. Credit: Mashable
Original image replaced with Mashable logo
Original image has been replaced. Credit: Mashable
Original image replaced with Mashable logo
Original image has been replaced. Credit: Mashable

Earth is teeming with biodiversity, though many critters, like the world's largest bee, go unseen for decades in their remote or niche habitats.

But little-seen creatures like the mouse deer are out there, persisting — as long as their wild homes remain untrammeled. And scientists suspect that millions of species, especially insects, have yet to be documented by science.

"Go to a rainforest or a coral reef, or any of the wild places left on the planet, and we are simply over our heads, Seabird McKeon, an ecologist at the University of Central Florida, told Mashable earlier this year.

Many species, however, are imperiled, or may become imperiled this century as the tolls of habitat destruction, exploitation, and climate change, amass. The UN estimates that 1 million animal and plant species are threatened with extinction.

The elusive mouse deer might be threatened, too.

"We're careful not to assume their species is thriving across a wide area," Tilker said.

Mashable Image
Mark Kaufman
Science Editor

Mark was the science editor at Mashable. After working as a ranger with the National Park Service, he started a reporting career after seeing the extraordinary value in educating people about the happenings on Earth, and beyond.

He's descended 2,500 feet into the ocean depths in search of the sixgill shark, ventured into the halls of top R&D laboratories, and interviewed some of the most fascinating scientists in the world.

Mashable Potato

More from Furtastic
Shelter cat gets a timeout for helping other cats escape 'several times a day'
Original image replaced with Mashable logo



The PetSafe ScoopFree is a budget Litter-Robot alternative if your cat hates enclosed litter boxes
Cat stepping into litter box and cat sitting on toilet beside litter box

What is the best robot vacuum for pet hair? After testing, my cats and I chose 4 top picks for 2026 so far.
Dreame X60 Max Ultra Complete robot vacuum cleaning white fluffy rug

Recommended For You
Snag the Razer Basilisk V3 Pro gaming mouse near its lowest price ever
Razer Basilisk V3 Pro on pink and orange abstract background

The Razer Orochi V2 gaming mouse is now $32.99 at Amazon — upgrade for better than half price
The Razer Orochi V2 Mobile Wireless Gaming Mouse, in black, pink, and white, on a green background


Lenovo debuts a concept 'no-charging' keyboard and mouse combo at CES 2026
lenovo keyboard and mouse combo

The Logitech G305 wireless gaming mouse is under $35 at Amazon — save over $10
The blue, lilac, and black models of the Logitech G305 Lightspeed Wireless Gaming Mouse on a red and orange background

More in Science
How to watch Chelsea vs. Port Vale online for free
Alejandro Garnacho of Chelsea reacts

How to watch 'Wuthering Heights' at home: Margot Robbie and Jacob Elordi's controversial romance now streaming
Margot Robbie and Jacob Elordi embracing in still from "Wuthering Heights"

How to watch New York Islanders vs. Philadelphia Flyers online for free
Matthew Schaefer of the New York Islanders warms up

How to watch Mexico vs. Belgium online for free
Israel Reyes of Mexico reacts

How to watch Brazil vs. Croatia online for free
Vinicius Junior #10 of Brazil leaves

Trending on Mashable
NYT Connections hints today: Clues, answers for April 3, 2026
Connections game on a smartphone

Wordle today: Answer, hints for April 3, 2026
Wordle game on a smartphone

What's new to streaming this week? (April 3, 2026)
A composite of images from film and TV streaming this week.


NYT Strands hints, answers for April 3, 2026
A game being played on a smartphone.
The biggest stories of the day delivered to your inbox.
These newsletters may contain advertising, deals, or affiliate links. By clicking Subscribe, you confirm you are 16+ and agree to our Terms of Use and Privacy Policy.
Thanks for signing up. See you at your inbox!