Jaga

The Jaga is a mix between a scorpian, dog and a predator(from the movie AvP) But has a unique ability to change its fur color to match its surroundings. When its in a tight spot, like its about to be killed(or eaten) it spews its saliva on to the predator(the saliva has a form of biopoison) and then the predator dies(very painfully) in a couple of minutes or so. These creatures come in packs from anywhere to 10 or 20 Jaga. Normally females are the ones hunting. Sentient beings, emotion, feel emotional pain of their prey.