A mule is the offspring of a male donkey and a female horse. Initially bred for their strength, mules are known for their endurance and surefootedness and are used in various agricultural and ...

Mules are a hybrid of two species – a female horse and a male donkey – so they end up with an odd number of chromosomes. A horse has 64 chromosomes and a donkey has 62. A mule inherits 63.