Unless you've spent time on a ranch with large pastures, you may not realize that even cows need to get away from their kids once in a while. So they hire babysitters. No, really. Nearly any sunny afternoon you can ride through our pasture and find a bunch of calves being watched over by two or three cows while the rest of go off and graze or have a drink with the girls.
I've never checked, but I assume they take turns keeping an eye on the brats. Or possibly, like some humans, the same poor souls get stuck with playground duty every day. I do know one thing. The missing mamas are always within earshot, and will come on the run with one bark from Max the Cowdog.