Purr

A purr (to purr, purring) is a sound made by many small wild, and house, cats. It is generally associated with a feline state of relaxation and/or content.

Unlike the way it was portrayed in the full-length Disney animated feature, The Lion King, large wild cats, such as lions, tigers and leopards, can not purr. Larger cats make more of a chuffing sound when content.

However, many furries roleplaying large cat species characters may take a bit artistic license and purr nonetheless. In some rodent and bird species, bruxing is the equivalent. Also, it has been said by owners of pet rabbits that the lapine version of the purr is for the rabbit to rub it's incisors softly against each other, making a purrish sound.