Excellent, glad to hear everything went well - surgery is always a worry, even routine stuff. I am glad they are starting the heartworm and parasites. Do they have a guess at Jonny's age? The heartworm can't be too bad given his energy level now, and the lethal nature of his tail!

Our Gracie the Great Dane had a similarly lethal tail - we used to joke that it was not connected to her brain at all, because she seemed to have no clue when it was banging against someone or something when she was excited!