Dogmeat (Fallout 4)

The protagonist's dog is a dog living in the Commonwealth.

Background
The dog appears in the Fallout 4 trailer searching an abandoned house. He sniffs around in the bedroom of a child who lived there and picks up a scent, and immediately runs toward Vault 111. He is then seen afterwards wandering the wasteland with the protagonist.

Appearances
The protagonist's dog appears only in Fallout 4.