So my little dutchie, Peppermint, has these strange hard bumbs under his fur. They don't seem to be very sore because I've touched them and he didn't flinch in pain. I am bringing him to the vet this thrusday regardless, but I'm wondering what these could be. He cohabitates with another fixed male, Slingshot, but they don't ever fight (just love each other), and they don't have fleas because I checked that. He has three of these bumbs I've noticed, one on his back one on his side, and one near his sholders. Does anyone have any idea what these could be?