Everyone's Best Friend
If you want to pair Dogmeat with a companion, say Nick Valentine, you'll want to install this Fallout 4 mod right now.
Everyone's Best Friend allows you to use Dogmeat and someone else at the same time. You can't do that at any point in the vanilla version of the game and that's what makes this mod so exciting.
If you're sick and tired of rolling around the Commonwealth with one companion at your side, give this mod a go.
It could, and should, change how you play the game.