When looking at pet door sizes, shoppers see two sets of measurements. The larger numbers are the dimensions of the actual frame, the part that fits into the opening in your door or wall. The second ...

A smart pet door that claims to recognize your pets — and only your pets — just closed its Kickstarter campaign and is headed to production. Most pet doors are basically just small holes cut into the ...

Swinging pet doors are great, but they often welcome unwanted guests. A new breed of door arms your pet with an electronic key: A 1- to 2-ounce device attached to Killer's collar alerts a sensor in ...