Moxxie is possum coded, but for this I'll say cat coded

He's a socially awkward introvert who hisses and claws at squirrels, and he can be sassy when he wants to be

Blitzo is cat coded, but slightly more dog coded than Moxxie since he's more social and outgoing and protective of his friends

But also he'll purr while staring at Moxxie's face in his sleep and deliberately try to annoy people, and he doesn't like getting that close to people emotionally

YES

The character we first me up with is rat coded because Piper.

Absolutely