I've also had the same problem this week with my 30lb female. She did this once before. I think it's a jealousy problem. I have a 2 yr. old Persian male. She absolutley HATES him! When he tries to play, she gets upset...It doesn't happen very often, but I noticed him cornering her a few times...
I have a 20 year old cat that has a growth/lump on the base of her tail. The vet says it's nothing, but had a name for it. I moved out of state since then and wondered if anyone would know what this is?
mswla