See how you can build an outdoor shelter for cats—it's easy, cheap, and your feline friends will love it! Full instructions: www.alleycat.org/resources/how-to-build-an-outdoor-shelter EDIT: We suggest keeping the shelter in a safe, outdoor location. If you are worried about predators, you can cut another set of holes as an exit. This shelter is just one of many options. To see more outdoor shelters visit www.alleycat.org/resources/feral-cat-shelter-options-gallery | Alley Cat Allies