BiteGuard KennelPlex kennel dog doors in use at Berkeley Animal Control, California.
These kind words and the image were originally found on Pinterest.
"BiteGuard kennel doors in use - Berkely Animal Control, Berkeley CA. These are well liked, and it was reported the dogs learn to use them very quickly. What we love: kennel doors that are safe, easy to use, and can help control the indoor environment while giving dogs access to their outdoor kennel area. What we'd love to see: more of these used in indoor/outdoor kennels."
--- Shelter Medicine