Im watching my boyfriends cat at his house while hes away on business and i love his cat; However, He is starting to make me think something is wrong. Aside from the licking bags and jumping in a sink full of water when im going to do dishes he is acting rather odd. At night i have been noticing things about his cat that I have never seen before. His cat will walk in a room and stare at a wall with his body low to the ground and butt up. His eyes will get big and dart away to the spare room and howl loud at walls and do the same thing then run back to its original spot he started in. I have cats at home and I have never seen this behavior before. Is this typical in cats or is this one strange?