My foster cat will sleep a few feet away from my other cats on the bed, but if they have to walk past her, or she them, she hisses at them. Tonight she and one of my cats were eating peacefully side by side at a double-dish; she turned to look/sniff at him (and I got very hopeful) but when he turned to look at her, she hissed and swatted at him.
Any explanation?
Any explanation?