I let my brither take my dog on a pretty long hike and when he came back it looked like he had a cut on his pad. He dind't stop likcking if for 2 days and it looked like there was a black spot in it. He hasnt been licking it lately but I also noticed that the black thing from inside the cut is gone. Now hes limping on it pretty noticeably.
Should I take him to the vet? Or will it heal on it's own?
And for his tick problem the black spot is still in him, and its a little bit red around still. Just want to make sure thats normal.