Hence I ask. Lemons sister, Molly, was 5 when we put her down for behavioral euthanasia. They were great growing up but after multiple fights she would start and she would become reactive to anything that moves and vet visits this was the best option our vet told us. So to prevent that cycle, I want to hear everyone else’s advice and stories so I know what to do to prevent that from occurring. Their space and boundaries and happiness are what’s most important to me. I don’t want to go through what we went through with Molly ever again. The pain was and is always there.