He is terrorizing Phil by remaining at the doorway to his house and keeping him out. The Vault Dweller can distract him from the old man and, by doing this, recruit him as a companion. His previous owner had been killed by thugs hired by Gizmo about a month before Dogmeat met the Vault Dweller. He can be recruited by giving him an iguana-on-a-stick or wearing a leather jacket, his previous owner wore one according to Phil, to distract Dogmeat from Phil's house.
Dogmeat can be obtained as a follower regardless of the player character's Karma.
Unlike humanoid non-player characters, Dogmeat cannot wear armor, equip weapons, or use items, although he can be administered stimpaks by the player character and has a Damage Resistance and Damage Threshold equal to that of leather armor.
If Katja and Dogmeat are both following the Vault Dweller, Katja will say "I hate dogs" repeatedly.
Scott Bennie was the designer who came up with the name "Dogmeat" for the in-game character. The name was initially applied to Jake's dog in the Hub (previously called Dogshit). Later, it was applied to the current non-player character Dogmeat, either by Tim Cain or Jason Anderson.[Dev 1]