
If it's not bleeding or bothering the dog, and there isn't a loose or flappy bit of claw that might catch and tear (ouch!!) then I would bathe it and then leave well alone. Keep an eye out, though, and at the first sign that it might be bothering him take him to the vet for some antibiotic on the offchance that some infection has started. Toe infections can be the very devil to get rid of.
:)