broadly, I think the animal traits that I most resonate with are.. sociability (whether with others of their species or humans), being furry (a couple exceptions), smallness (again a few exceptions), tendency towards very particular personalities.. critters that move quadrupedally at least most of the time..

the biggest trait for me that I don't vibe with are any animals that are predominantly solitary.. even if an animal is only in a pair seasonally for baby raising or something, that's enough to me (though I'm generally more kinnie about animals that live within herds/packs/etc or permanent long term monogamous pairs), but animals that only meet up to breed and then go their separate ways not so much.. it's why my cat kins are basically just domestic cats and like, lions..

while I do mostly feel like a furry creature I do resonate at least somewhat with some birds.. mostly mimic capable birds, small parrots who can't entirely mimic a voice 100% but have their own little voices, crows maybe also.. they're very echolalia animals, peep peep, preening a partner...

the least me like animal is absolutely.. reptiles, scaled things I don't vibe with... amphibians too.. there's something about the sort of. asocial simpleness of a lot of them that just doesn't resonate with me. lay in the sun flick out tongue eat a bug.. not me at all..