I cant think of another species that hates another, unless maybe it was their food source, but dogs go batshit when they see a cat, maybe its like my reaction to seeing spiders, although that is completely understandable.
I woke up just now, from a dream about a dog chasing a cat and am now pondering the reasons why they do this, and thought someone on MN will know the answer.
Cats have a reaction to small jumpy things like mice and birds but I understand they would have that instinct as they would eat them if hungry...
Have cats ever been on a dogs menu sheet?