Keeping ants alive isn't easy. A typical colony requires regular fruit ­infusions, lots of water, and protein sources such as mealworms, crickets, and fruit flies. Because these pets can't freely roam your home (that's called an infestation), you'll need to set up a formicarium—the technical name for an ant farm. Choose a species appropriate for your skill level, then trust these teensy-weensy towns to ensure your ant experiment is an active success.