Chevrotains, or mouse-deer, are small even-toed ungulates that make up the family Tragulidae, the only extant members of the infraorder Tragulina. The 10 extant species are placed in three genera, but several species also are known only from fossils. ... Chevrotains are the smallest hoofed mammals in the world.

Are mouse deer really deer?

Less than 22 inches (55 centimeters) long as adults, Mouse Deer are one of the smallest hoofed animal species. They are not really deer at all, but belong to their own unique family of hoofed mammals.

Are chevrotain real?

Also called the Vietnamese mouse-deer, chevrotains are actually neither deer nor mice, but they're the smallest ungulates — or hoofed mammals — in the world, according to the GWC. It's been a long while since this mammal has been seen in real life. Its last sighting was in 1990 in Vietnam, according to the GWC.