Please help! We just got a new boxer puppy a few months ago! This is our first puppy and I have really been trying to read up on them. Just so I am one step ahead of the game. About a 2 weeks ago I noticed a small bump on his neck (nothing huge). Well now it has grown quite a bit. It's really red and he has lost hair on it now. It did have a scab on it but he keeps scratching it off and it's really red and bleeding a little bit. It started after I bought him a new collar. I don't use this collar anymore as I am wondering if this is what caused this?? So I bought a new collar and I only put it on him when I put him outside. I have been looking this up on the internet too see if I could find any info regarding this, and of course I have now just scared myself and am a little confused. It doesn't seem to hurt him,I can touch it and squeeze it and there is no reaction from him when I do this. If I scratch around it... he tries to scratch with his paw! ...Also before this happened he lost some fur from biting at himself on his back just before his hips. But this hair has started to grow back but I have noticed that his skin is really dry. Does anyone have any clue what this could be??