Our old lab, Keithie, has tons of them. He had a big one on his toe (we called it his 'frankentoe') but he kept bumping it and it started to get gross, so we had to have it removed. He also has a big one under one of his eyes, and everyone always stops and asks what's wrong with him... but surgery next to his eye would be risky, and he probably wouldn't be able to fully close his eye afterwards, and it doesn't seem to bother him so we leave it. Oh, and he has a bunch in his ears, which makes them very susceptible to ear infections, so be sure to keep them clean.
Most of Keith's are pink, except the one by his eye, which is black. I think that has to do with the color of the skin they're on, though.
Anyway, other than looking funny and the ear thing, they've been nothing to worry about...
Single mom to Rain (1/93) , grad student, and world traveler