[988747]

I wouldn't say "plenty" - few primates, dolphins, orcas, elephants, and, strangely, magpies. But the grounds for that claim are shaky for some of them, the only 3 species we are 100% sure about are chimpanzees, orangutans, and humans. Magpies, for example, require "a training" (whatever that means).

[rjzzleep]

Probably cause we've only tested a few, not that it matters though. Humans take a pretty long time to recognize themselves in the mirror. I wonder if the mirror test would change if we would expose the animals for a almost a year before doing the test, just like humans.

That said even ants pass the test, i.e. they were recently(2015) tested.

But the whole thing can be characterized as: "Let me make up a random test, according to my personal opinion of what defines cognition and then see if a random animal I choose passes it".

Every couple of years we have requests of slews of psychology papers requested to be invalidated because they're unreproducible.

[user_7832]

> But the whole thing can be characterized as: "Let me make up a random test, according to my personal opinion of what defines cognition and then see if a random animal I choose passes it".

But of course! How do we know that humans are, indeed, the smartest? What if we've been failing every single test that mice have been throwing at us over the past millennia, and they wonder why we are so dumb?

(This is a reference to The Hitchhiker's Guide to the Galaxy in case you're wondering if I've gone mad. Not that one wouldn't presuppose the other :)

[kaba0]

The mirror-test is biased to vision, though.

Dogs pass the scent-based mirror test for example, their eyes are just simply not the primary way of interacting with the world.