If the baby is a male is called a colt, and female is known as a filly. As they age they will be known as Jacks (male) and Jennies (female).
Typically a baby male or female donkey is called a foal.A foal is usually under 1 year old. Young male donkeys can either be referred to as a 'baby jack' or a male foal. A young female donkey can be...
A Colt or a Foal
it is called a baby donkey