Could it be the site of an injection?

Lynne wrote:
So I just found a litte bump on Levi, on his skin hear his shoulder. It
feels like a mosquito bite, but the skin is not even the least bit pink.
There is also no wound, not even a tiny pin prick. The bump moves with his
skin, so I'm not too worried, but I'm curious if anyone has any ideas what
this might be. I was poking it and he didn't show any sign that it bothers
him at all.

--
Lynne