trained and will often defecate and urinate while first being handled, especially if they are nervous. The feces of a healthy mouse consist of a relatively innocuous solid pellet a few millimetres long. However, their urine is often pungent, particularly with males, and can stain fabric. See also Fancy rat Laboratory mouse Laboratory rat Mus musculus domesticus Mouse Animal fancy Fancy pigeon Golden mouse Rodents as pets References External links Rat & Mouse Club of America National Mouse Club UK Fancy Mice Breeders Forum East Coast Mouse Association American Fancy Rat and Mouse Association Mice Are Nice Pet Mouse Forum House mouse Rodents as pets Mammals described in 1758 Taxa named by Carl Linnaeus