Like most Iowa kids, Tyler Vohs enjoyed quite a few snow days off from school this winter. But instead of spending a cozy day inside playing video games, Tyler bundled up in his winter gear and trudged outside to help his dad unfreeze water lines for their cattle.

A few weeks ago, Tyler got up extra early in the morning to check on a newborn calf before school started. He helped the little calf get up and around on her wobbly...