Babirusas are believed to have diverged from their pig ancestors between 26 million and 12 million years ago after getting isolated on Sulawesi when sea levels rose at the end of the last ice age.

With long, fang-like tusks protruding from its mouth, the Siberian musk deer looks like something out of a vampire legend. Unlike true vampires, though, this unusual deer doesn’t drink blood ...

After protruding from the tops of the snout, the teeth look like antlers, which is how babirusas got their name — the word babirusa means "pig deer" in the Malay language.