So Groot went to the Vets yesterday, they have cleaned the wound and removed the black skin. His nose is now flat again. He has some cream to put on while it heals. he also has a couple of antibiotic injections over the next week.
So Groot is healing fine but now he is refusing to eat, I have ordered some electrolyte solution to see if that will help. Not sure what else to do, the vet said to call if he hasn't eaten three weeks after which will be next week.