I have read many posts on here about what could be on Smash's front paw but I just can't determine what it could be. The blister like thing has small openings that ooze pus sometimes but it's not decreasing in size, nor does it really seem to be bothering him. I put a little hydrogen peroxide on a qtip and rubbed it on the sore. I don't know if I should have done that or not
I posted a picture below.. Any ideas??