1. Animal!
2. Yes, animal. This phrase literally means 'like an animal'

Hayvan gibi literally means 'like an animal'. When you add an adjective, verb or adverb to the end, it emphasizes it, no matter what it is. For example hayvan gibi hızlı would mean very fast, and hayvan gibi bağırmak means screaming off the top of one's lungs. Hayvan gibi hızlı koşmak would be running really fast, hayvan gibi güçlü would mean very strong, hayvan gibi akıllı would mean very intelligent, and so on... Hayvan gibi by itself without anything added would simply mean very big. In very specific cases, it could also mean harsh.