Goat on Cow

Cow lives in a green field where nothing strange or quirky has ever happened. The one morning after a storm, she finds a goat on her back. The next day something even stranger and quirkier, she finds a pig, and the next day a cat all on her back. The animals refuse to go leaving cow with a heavy burden. But how long can her back hold out? A story dedicated to those who never get credit for the good things they do.