This question is about one of my moms cats. my mom doesn't seem bothered by this but it really bugs me. my moms DLH cat has been losing its hair off and on mostly from mid back to all around tail and butt, anyone have any ideas on what could be causing this? my first thought is maybe a food allergy my mom feeds her cats what ever is on sale right now she has Alley Cat food for them What else could cause this?