I just got back from the vet Cosmo weighs a whopping 6.2 lbs. (he does not look like it, he is a little chunky
). The vet said what he has is kinda like acne, (sorry i forgot the name, it was weird). anyways he gave me a pill called cephalexin that I have to give him twice a day and he is going back to him normal hyper self. Thanks for every ones concerns, I appreciate it a lot.