What is the purpose of their teeth then if they use sticks for combat? I'm going to see if they can eat Glorp Kibble. Its recommended for most pets.
My cousin tried using Glorp Kibble with humans when he was in the Alpha Quadrant. They blew up like a balloon and died- well, exploded, in a day. Try using Viper Meat from your local Recreation Sector. Easy to find, and nourishing to the human. For room space, try creating a makeshift landmass from a small fish tank. Plenty of space, and you can add items. Add a bit of water to make a small lake, but make sure they can swim first. They cannot breathe the mix of Hydrogen and Oxygen, but they can traverse rather quickly if trained.