cats

It's both. Domestic cats are social creatures. They possess at least rudimentary Theory of the Mind, so, understand that we are other beings, not objects. They identify their family unit through sharing and intermingling scent.

Cats are very scent-based, especially up close, where their eyesight is poor. This is observable when a cat displays aggression towards a "friend" who has the smell of the vet or a bath. From far away they look right but up close, they smell wrong - it's like a feline uncanny valley.