PuppyGoHere Dog Litter Pan by Litter Box Training. Training Guide Included 3 Sizes. Choose The Right Size for Your Dog. Great for Senior Cats with Special Needs and Rabbits.USA Designed just for dogs. Great alternative for working families, or apartment living. Helps to avoid accidents: the puppy always has a place to go, when you can't take them out. Choice of pan based on the size of your dog. Easy to use training guide included.