Female cows close to delivering are called springers . Cows are defined in sales by their age and period of gestation. 1st period cows are in the first 3 months of pregnancy, 2nd period cows are 3 to 6 months along, and 3rd period cows are in the final trimester of their pregancy. A donkey is a species equine all its own. Donkey and burro are basically interchangeable terms, although burros are usually smaller than donkeys.
Mules are the offspring of a jack and a female horse.
A hinny is a cross between a stallion and a female doneky or burro. A female donkey or mule is a jenny , a male donkey or mule is a jack , a casturated jack is a gelding . A baby mule or donkey is a foal , female babies are jennets . The process of birthing in donkeys and mules is foaling . A female goat is a doe or nanny , an intact male is a buck or billy , a casturated male is a wether .