Okay the other day my mom noticed bumps on 2 year old pitbull. When I first seen them I thought it was lots of little ticks but after examining him I found it wasn't ticks at all. It's like little bumps below the skin down his back. There is nothing on his stomach or legs or any thing, just his back. He is still his normal low energy self no signs of being sick. I'm going to call and make an appointment tomarrow for him to see the vet on wednesday but untill then does anyone have any ideas? I'd also like to add that he had his booster shots on monday of last week. Could that have something to do with it?