A pair that I developed at work, both animals typical of the Brazilian cerrado and both found in my state (Minas Gerais).

The maned wolf is called Diana, she has a personality typical of a maned wolf, that is, shy, introspective and antisocial.

The savanna mouse is called Misty, she is the opposite of Diana, she is very sociable and friendly.

The two were raised as sisters, Diana was "adopted" by Misty's family, and from then on they are inseparable.

Lobo-Guará (Chrysocyon brachyurus) = maned wolf
Ratinho do cerrado (Necromys lasiurus) = savanna mouse