In other species: goldfish , Japanese medaka , axolotl , chicken , marsupials , brush-tailed possums , European mole , gray wolf , dog , red fox , domestic cat , Sumatran tiger , mongooses , whales , horse , pig , cattle , goat , mouflon , sheep , hares , rabbit , Alpine marmot , pocket gophers , golden hamster , Mongolian gerbil , meadow voles , muskrat , European woodmouse , domestic guinea pig , short-tailed chinchilla , nutria , gray short-tailed opossum , tench , domestic yak , gray squirrel , western mosquitofish , European shrew , quagga , water buffalo , panther genet , American mink

Mendelian trait/disorder: unknown

Considered a defect: no