Squirrel!.Carl builds a birdhouse in his backyard for the birds. Dug takes it upon himself to guard the birdhouse so that the birds can feed from the seeds. However, a squirrel inhabiting a nearby tree steals the seeds, running corners around Dug. Dug resorts to feeding the bird with seeds from a bag. After pursuing the squirrel again, Dug ends up on the tree branch which breaks under his weight, causing all the seeds to flow out of the squirrel's nest. Taking pity on the squirrel, Dug shares Carl's peanut butter with him. Dug informs Carl of his efforts to guard the birdhouse. Though shocked at the damage, he compliments Dug for his efforts.