I was deadass just listening to KH music myself.

Now I'm just imagining Sora smacking the hell out of a bear with a Keyblade, just wondering why the hell he keeps fighting so many animals.

"Oh, great! First that shark in Atlantica, a jaguar in Deep Jungle, that lion in the Pridelands, now a bear?! What's next, a dinosaur?!"

sora then goes to "dinosaur" world to help aladar fight Kron.

Precisely. Goofy would be a triceratops for his shield, Donald would be an archaeopteryx, and Sora... Erm... Raptor? Megasloth? Smilodon?

this'll be wack when they anthropomorphize more

If Sora is there, what will that make him? A fox, a hound, or a human?

There's not a precident set for worlds with both non-anthro animals and humans beyond Castle of Dreams in Birth By Sleep, where the Fairy Godmother's magic was at play to make characters bigger or smaller. Since humans in Fox in the Hound can't speak to animals, and Sora and company are bound by the world order, Sora would either swap between being an animal and a human, or stay as one over the other to blend in.

Since it's canon that Donald is the one who disguises them as each animal or relevant creature type (His magic is the reason they were able to blend in in Atlantica, for example,) it would ultimately be up to him, and his discretion.

naw cute. i wanted a fox and the hound world in KH back in the day but knew it was so darn unpopular that it was never gonna happen and expected seeing agrabah or neverland for the upteenth time.

I think it's more likely for Donald to hunt Goofy instead of vice versa