I wanted to start a rat roleplay, but I want to pick a plot a lot of people would be interested in, since I know it's not too common of an animal.

--Rat groups have hierarchies like wolves were thought to, with an alpha, betas, gammas, and occasionally zetas (basically "omega" wolves).
--Rats are highly social and form complex friendships with others

--Rats in the colony may have specific jobs, like raising pups, foraging, guarding the nest, or digging out tunnels.
--Because rats are so small, it could make exploration a lot more fun!
--Fancy rats (domesticated rats) come in lots of colors, patterns, and varieties, so there could be lots of variety in the character's designs.