Hi, I was wondering if anyone knows if cats can grieve and become depressed? My year old male Ragdoll has really lost weight, and seems most of the time uninterested in food, it's upsetting to see him so thin. He's been checked over several times by my vet, with regular weighings, and the time before last, he'd lost a little more than the time before, and last time, he'd only gained 4g. I haven't changed his food or anything, and the vet can't find anything wrong apart from a small lump in his abdomen which doesn't move or get any bigger, but we think it may be scar tissue from when he had his retained testicle removed. The only thing I can think of that's changed, and it was about the time he lost interest in his food, was that my Staffy sadly had to be put to sleep at the end of August, and they were very close. Could losing his friend have had this effect in him?