One who takes into account the desires of all animals before that of the homo sapian race. Usually an animal lover will not wear rubbers or any other sort of protection, leaving them prone to many forms of sextually transmitted diseases. Most animal lovers will fornicate their fellow house mates such as dogs, cats, and sometimes even porcupines, leaving the lover of the animal in all sorts of pain.
Bill: "Dude i just fucked my dog and i really enjoyed it"
Bill's mentally unstable friend: "Your a straight up animal lover dude"
"I am such an animal lover that i banged my pet porcupine and now i cannot stop bleeding!!"