I just found out my cat 12y now have heart murmur, she lost a lot of weight and she is sleeping a lot. she was having problem with her back right leg, the vet told me she had a small heart attack and that affect her back leg. he suggested 1/4 baby aspirin 2 X wk. Mystic is a cat that does not like to be handle, I had the vet come to the house because the travel will be to hard on her and he agreed with me. Because she is the way she is, we decided to make her as comfortable as possible. I move her in the house, she is an outdoor/garage cat.