I have a 2 year old male cat that will not pee in his box. Now due to past events I had to move back in with my mom and sh has 4 cats and I have 3. All of mine I have rescued (kinda a weird story about that) 2 of them are litter mates and one I took from my stepsister because she neglected it. Every cat in the house is fixed. But recently he started peeing outside the Box. My vet put him on an antibiotic and I kept him confined during the treatment. Sometimes he would use the box and other times he peed on the outside. I am at a loss these are my babies since I don't have kids right now. The boxes are always cleaned so they aren't full. All the cats get along with an occaisional smack here and there. But now my mom also has 5 dogs. All the cats go into hiding when they are out. I'm afraid that if my mom finds out he is doing this again she is going to make me give him up and I just can't do that. He is the first one I rescued. Someone please help me figure out what is wrong with my baby.