Watch: American Pharoah Foal Takes Her First Steps

BALTIMORE (WJZ) -- Remember American Pharoah, the racehorse who won the American Triple Crown and the Breeders' Cup Classic in 2015? In winning all four races, he became the first horse to win the "Grand Slam" of American horse racing.

He now has several progeny.

Ahmed Zayat of Zayat Stables bred and owned American Pharoah throughout his racing career, but sold breeding rights to Ashford Stud in Kentucky back in 2014.

Before the announcement, offers for American Pharoah's breeding rights reportedly exceeded $20 million.

According to ESPN, American Pharoah was bred with more than 200 mares in 115 days last year.

The first babies resulting from that breeding spree are now arriving. In case you're curious, a horse's gestational period is about 11 months.

His first foal, a colt, was born on Jan. 3 at Brookdale Farm in Kentucky.

In the days since the colt arrived, three fillies were born -- at Coolmore America and Hill 'N' Dale, both in Kentucky, and one at Zayat Stables in New Jersey.

Watch the Coolmore filly take her first steps in the video below: