Whats your limit to how many you'd like to see running caterwompus around the back yard?
Maybe 1? Naw, he's gotta have a friend to play with. What about 2 or 3? 3's a good number. Manageable in size, and they often form their own little foal-herd with foal-herd-social-graces! (Think of that as the kind of social graces a 2 or 3 year old human child would have in a 5 star restaurant, and you'll get the joke implied *grin*)
I think most of us would agree, unless you are running a professional breeding operation, (and then well, hopefully we wouldn't see THAT ad on Craigslist) that any number above, oh lets say 5?, would be too much for one person, or a small private horse owning family to handle.
Following this line of thought, if 3 is ok, 5 would be 'pushing it', and anything above 5 is too much... what about 20?
Yes, I said 20.
And its not even just 20 foals. Its WALKALOOSA foals!
No folks, I DO NOT make this shit up.