For me, it's a thing with non-voiced voices, same applies to the Housepets! cast
Peanut (Greek Accent) Peanut, eh, has for me a greek accent honestly even if he's born in the good ol' USA, it then later turns into a more Italian accent when he's really happy (I met a dog that looked like him in Greece a few years ago)
Grape (Teenage version half British half American Accent) she has in my head a british and american accent
Max (Californian Accent, teenaged) Max is still probably in his teen years and his personality reminds me of california for some reason lol
Fox (Australian Accent) for some reason Fox to me has a Australian accent going even if I knew that Fox is a country boy probably. and sometimes when I feel like it turns into a Japanese accent, (I associated huskies being Japanese mostly)
Bino(Tom Hanks Accent) strangest part, honestly he sounds a bit like Tom Hanks (not explaining that)
Fido(German police accent) obviously by now if you know him, or a normal accent.
King(basically Russian accent) he's probably going to have a child version to fit with his small size that and he does have a temper to fit better with Russia.
Tarot(bit of a mystic African accent) she's magical, nuff said.
Joey(kid accent of Bino's) little brother to Bino, again nuff said
Res(American accent) normal accent
Sabrina(mix of Tarot's and a normal American teenage accent) because she's influenced by Tarot
Bailey(Valley Girl Accent) it's freaking obvious
Pete(Normal American Adult accent)
Great Kitsune (South Korean accent)
lastly, the ferrets have a upper class english accent, though sometimes they adapt to normal American accents
That's my brain to you, folks! tell me how you think