Dogmeat is way too overpowered it seems, as I observed at Evergreen Mills when I let him go one on one on a Super Mutant Behemoth. Dogmeat killed him with little under half health remaining. Is he supposed to be this powerful? It would seem he could single-handedly take on anything.
I picked him up early in the game at around level 4 when I stumbled across the Scrapyard, on my way to Minefield for Moira, if that helps.
Thanks.