[Dino] continues his to satisfy his weekly hacking goal by building a cat door ... off sale on doors. So he picked up a six-panel door and set to work. The first step is drawing out the opening ...

A lot of cat owners also use pet doors to place litter boxes in closets out of sight. If you and your furry friend are in need of a similar solution, allow me to introduce you to the $25 Purrfect ...