Now that I think about it he did have contact. He was walking up too close to my Great Dane/Lab mix and she gave him a warning bite on his snout. She trusts my Rat Terrier but they have lived together for years. So, him and any person can walk by - but Danté has not earned that trust yet from her as he is a young punk
She did puncture the skin on his snout - the same side as the white bump has appeared on the outside/kind of inside of his nose. Could bacteria cause this - from Nike (my great dane mix) to him?
I guess to make sure this is nothing serious I will take him to my vet.... Love my Danté!