What is it when a dog (Golden) develops dark, almost black, skin in the hind leg "arm-pit" area of the belly (sorry, can't think of a better description)? It's not dirt..
The affected area seems to be getting bigger but it has never seemed to bother the dog at all.
I think I'll be taking her into the vet for him to have a look but wondered if anyone had any thoughts...
Thanks in advance.