Any human language.

isn't that the same?

animals for sure

Second one. That would be so cool/special.

Animals, they are way better than humans anyway. Although they do say never to meet your heroes....

It'd just be hours of "LET'S FUUUUCK! LET'S FUCK, LET'S FUCK, LET'S FUUUUUCK!" every damn morning.

Yes

Human languages for sure.

Any human language...

Does this mean I know Proto-Indo-European, too? Or only currently living languages? Or only languages we have written representations of?

Ooh this is a fun question. I would definitely go for speaking to animals. Human languages can be learnt with study in the real world but speaking to animals on more than just a basic level is magical or super powers type shit.

I get visions of living in a cabin in the woods chatting with my bird and squirrel and fox friends. And developing an understanding with the local bear to watch each other's backs.

Or raising armies to help with the uprising.

"HEY HUN, YOU WANT SOME OF THIS BEEFCAKE? YOU AND ME BABY, LET'S SMASH! OR ANYONE ELSE?"

Flawed question. Humans are animals and all animals speak the language of "fuck!".

Definitely animals. I want to be able to speak to my cat. Although speaking any human language would certainly be useful.

Animals.

I can learn human languages if I want, but animals are much trickier.

Oh that's a lovely vision! Can I move into your cabin?

There was a gorilla that learned sign language. It learned hundreds/thousands (?) of words.

…once you got past the initial cool/cute/fun factor, conversation was about as stimulating speaking to a toddler.

Animals? Cool but likely useless.

How else are you going to know if your horse needs glasses?

Oh absolutely you would be more than welcome. I think in this vision, it would be certain people that can hear what others can't. And you would definitely hear them too!

I wish that some of the people around me only spoke in meows or barks.

I just want to talk to my tiger cat for 5 minutes so I can convince him to wear kitty socks in the winter, he'd be warmer and less grumpy. He likes to "tent" in these months, and his little baby feet are always so cold!

I've got great news, but you'll need to start making transfem friends

If I'm able to speak cat, does that mean my cats will actually listen to me? or will they just stare blankly at me and stick their tongue out when I ask them to get out of my bedroom?

Human language. Then I could watch undubbed Anime and stuff again because I can't read too much.

While some of the more intelligent animals could be interesting to see just how far they could go, most animals are going to mostly be vocalizing for the purposes of procreation. The wonderful sounds of the forest are millions of bugs and animals screaming, "hey, wanna fuck?" as loud as possible. Other vocalizations will be similarly utilitarian like, "look out, predator", "holy fuck this hurts" or "back off!" Not exactly stimulating conversation.