I live in Alaska and I've seen mama moose bring their calves into a yard to play in these pools because they know they will be safe there. It's the neatest thing to see a brand new moose calf frolic in your yard. Pure happiness on gangly legs.
A tiger mother lost her cubs from premature labor. Shortly after she became depressed and her health declined, so they wrapped up piglets in tiger cloth, and gave them to the mother tiger. She now loves these pigs and treats them like her babies:: aww!