Standard or burro size donkeys are full-grown at age four.
Miniature donkeys age three.
Horses five to eight depends on the height and breed.
GOD bless you and your family two and four-legged!
Melody Johnson, Trainer/Owner
What Age Is My Donkey, Horse, or Mule Full Grown?
Hello from Japan. I am working on my English and arrived to this site just to say how much I enjoy reading it everytime you post. Would you please contact me the next time you blog. My email is Verfaillie@aol.com . Thank you
Well, Horses do not completely finish filling in their skeleton until they are 6 years old. But, they can reach their full height at 4. Donkeys and mules mature slower.
Thank you for your response to my blog post if you look at the link attached you will see the entire time it takes for the equine to become full grown. 🙂 Mammoth donkeys are not full grown until 6 and 7 years of age depending on their size.