The small work horse is called Prometea after a character in Greek mythology.
She's two months old, weighs about 220 pounds (100 kilograms) and the people who created her say she's in excellent health.
The DNA for Prometea came from the mare which gave birth to her.
Which means as well as being mum and daughter, they're also identical twins!
Prometea was born just two weeks after the mule Idaho Gem was also cloned.
Save endangered breeds
Clone supporters say we could now copy really valuable or endangered horses.
But it's not so easy: Prometea was only born after several attempts.
So far horses, mules, sheep, cows, pigs, cats and rodents have been cloned.
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