Sometimes necessity is the mother of invention, as the owner of this chunky feline can attest. Of course, weight problems are just the tip of the iceberg. Anyone who owns a cat knows the need for ingenuinity around the kitty litter issue is endless. But don't worry, we've got some ideas for you dog lovers as well. Check out these 13 gadgets and gear that make life easier — or at least a little more fun — for pets and their people. (Text: Morieka Johnson)