It's a decent mid-game card with moderate stats and an ability that adds a random Dog into your hand. However, unlike Alphys, the gained card doesn't get a drop in cost. The Dog House also can't attack, but it does have Taunt.
It is a good card for its stats. It could be used with Doggo if you get it from the Dog House to send it back then get another dog. And because you will have a Dog on the board, Dog House will also give you an extra Dog.