This weekend at Mountain Bluff Zoo, Katy and Micah get to help out at the nursery. One of the zoo's tigers is expected to give birth any day. But they'll get to help care for the babies only if the tiger mum cannot. This weekend at Mountain Bluff Zoo, Katy and Micah get to help out at the nursery. Caring for cuddly baby animals is a dream assignment! They learn that one of the zoo's tigers is expected to give birth any day. But they'll get to care for the babies only if the tiger mum cannot. On the one hand, it would be so fun to hold and feed baby tigers! On the other hand, it would be sad if the tiger mom couldn't care for her babies. Kathy and Micah aren't sure what to wish for!