Yeah it was odd, she started getting more aggressive and her coat got coarse and sparser, since she was so young we ran a Tenn Panel and did surgery on her. When she got ill at 4 she was already in advanced insulinoma and had a big tumor from the lymphoma in her belly. She made it a month on high doses of pred. Being our first she got all the crappy treats and food before we knew better. And most of mine came to me older, with previous cruddy care so that hasn't helped issues. I really can't understand getting a pet and not being willing to treat their issues, as covered the common ones except for lymphoma are manageable for years and if under control aren't causing any pain. Now my last male has popped up with a small mct, just another thing to keep an eye on.