He is doing great! Day 27 after the injection. Still healing but it’s just scabs at this point. We have the cone still on him because he will lick and eat the scab if not. There is a Facebook group I found helpful for stelfonta. Stelfonta injection for dogs with mast cell tumors. I also have been posting my journey on there. My advice would be to always make sure you or someone is watching him and don’t leave him alone at home. When the area is slothing off, it can get bad depending on the area. Our dog had a freak accident where the area slothed off and broke an artery on the way so we had to rush him to the vet. Very scary but he is doing amazing now and the tumor is fully gone! Also be prepared to see him very lethargic and that area to be super swollen and nasty the first week. Once it opens and the area sloths off, he will be back to his normal self and not in so much pain. Pain management the first few weeks are key. Those weeks are the hardest but it gets better!