The bunny rat,[1] or hairy-soled conyrat[2] (Reithrodon auritus) is a species of rodent in the family Cricetidae, native to southern South America.

The body is covered in long soft hair, and the tail is also hairy, ending in a distinct tuft.

The hind legs are unusually long for a rat, with the first and fifth toes reduced in size, giving them an appearance similar to those of a rabbit.

The fur is dark brown to buff-grey over the upper parts of the body, becoming paler, sometimes almost white, on the underparts.

Without genetic analysis, the bunny rat can only be reliably distinguished from its close relative, the naked-soled conyrat, by the fact that the soles of its feet are hairy.