Crater Viper

The Crater Viper is a predatory creature native to an unnamed planet which held a base of Emperor Zurg, Buzz Lightyear and his partner Warp Darkmatter encounter a group of these creatures while on a mission.

Facts
Crater vipers get their name by resembling giant snakes with eight legs and for living in volcanic craters, they even emit smoke from their mouths, though it is not yet known how they live in such conditions.

Crater vipers seem to be solitary hunters as Buzz Lightyear stated they never hunt in packs, (though the crater vipers he encountered were the fingers of some monster that guarded Zurg's lair). Although crater vipers are carnivorous, their natural prey is not yet known, however they can and will consume a sentient species such as Little Green Men.