This lump has appeared overnight, doesn't seem to be causing any pain. Only on one side. Thought it might be the testicle descending but there isn't one on the other side.
Had a checkup at the vet last week and she said everything was fine.
Does anyone know what it could be?
Thank you
Also, sorry for the photo of my dogs penis.. I'm just concerned and wonder whether I should take him back to the vet