help! my cat blue is 2-3 years old. last time i took him to the vet they noticed there was a patch on his face that he had lost hair on but it looked like it was growing back, but they said to keep an eye on it. today i noticed the patch has gotten bigger and i'm scared for him! he also bit me twice today which is unusual. i'm taking him to the vet tomorrow but i was just wondering if anyone has any ideas on what it may be?