My 8yr old female cat has become aggressive and territorial with her litter mate, she has started peeing on the bed and spraying in various places.
I had her checked over at the vet and he said she is stressed, I have implemented al, strategies suggested on Google, numerous litter trays spread around the house (generally ignored and we also have a cat flap to the garden), feeding them separately, extra strokes and reassurance, extra play time (not really interested), Feliway diffusers, and different sleeping areas.
Our other cat is now scared of her and runs away whenever they encounter each other, I am constantly on edge wondering if she is peeing somewhere she shouldn’t, she is still really affectionate with me and can be quite needy, wanting lots of strokes and attention.
Vet recommended we consult a cat behaviourist, has anyone used one and was it effective?