How many foals can a mare have at once?

about 5,000,000,000

This answer is not right. I'm a horse crazy kid and I know for a fact, this answer is not true! There is around 1,000 left. I'm on my way to saving them, even if I'm only 10.

Both of these answers are wrong. I don't know how many wild horses there are in the world, but there are around 30,000 wild horses still roaming the United States (the number is constantly declining, however).

The Przewalski's horse is the only truly wild horse numbers between 1000 and 1500, The 30,000 in America are mustangs which are feral not wild