The curl in Devon Rex fur is caused by a different mutation and gene than that of the Cornish Rex and German Rex, and breeding of a Devon with either of those cats results in cats without rexed (curled) fur. Devons, which are medium sized cats, are often called "pixie cats" or "alien cats" because of their unique appearance. Their uncommonly large ears are set low on the sides of their wide heads, their eyes are large, and their noses are slightly upturned. Unlike most cats their whiskers are very short and often curled to such an extent that it may appear as if they have no whiskers. Their body type is distinctly lightly-built. Their long, sturdy legs are well suited for long leaps, and their toes are unusually large. Devon Rex cats come in all colours. The ears are large and slightly rounded.
