Horses and donkeys are different species, with different numbers of chromosomes. Of the two F1 hybrids between these two species, a mule is easier to obtain than a hinny, which is the product of a female donkey (jenny) and a male horse (stallion).The size of a mule and work to which it is put depend largely on the breeding of the mule's dam (female parent). male mule is properly called a horse mule, though often called a john mule. A female mule is properly called a mare mule, though often called a Molly mule. A young male mule is called a mule colt, and a young female is called a mule filly.
A fungal infection is at the root of toenails turning yellow. This infection is called onychomycosis, which generally starts at a nail's corner and spreads across the cuticle. It affects two toes most often: the big toe and the pinky toe.
Black-and-Blue Toenails (Hematoma) Unlike with yellow toenails, black-and-blue toenails are not actually caused by a change in the color of the nail enamel itself. Black-and-blue toenails are caused by an injury to the skin beneath the toenail.