I wonder if this could work for outdoor kitties too? How to Build a Dog Potty Area -- A designated potty spot would make it easier to keep the lawn clean for the kiddo, and keep Kiley from getting as muddy when she has to pee on rainy days.
Free plans: Build a stylish dog house . This stylish ranch-style dog house is made from three sheets of plywood and is big enough for a large dog. Redwood lattice battens and a shed roof create the rustic ranch-house look.