He's a three year old pit.Every now and then I notice him licking his paws like crazy!When he's doing this they are either tore up or getting there.He licks/naws at them and the skin comes off.It looks like what a blister would look like when the skin comes off.Sometimes he limps because of it.He goes crazy with it though.He will be going at them for hours sometimes.Leaving wet spots on the carpet in a circle pattern cause he goes at it and start to get spun around.(when it's the back paws)He will also get teritorial with them.He's not so bad anymore cause I get on to him and do what i'm going to do anyways.Kind of letting him know that he's a dog and i'm a man that owns him and will do what I want,so to speak.He nipped at me today when i tried to pull him away to look at them.He's going at them right now!!!What is this?Someone told me it's like a rash from being on the carpet then going outside and getting tore up.He used the rash as to explain why he keeps at them.