McDuff the little white dog gets lost while chasing a bunny and needs help finding his way home.

On Christmas Eve, McDuff's persistent "woofing" begins to annoy Fred and Lucy, but it leads to the rescue of Santa, whose sleigh has gotten stuck in the snow.

Fred, Lucy, the baby, and McDuff go to the lake for a Fourth of July picnic, but when ants consume all of their food it's up to McDuff to find something for them to eat.