Once you have decided to buy a pet door, your first consideration will be its size. Pet doors are not ‘one size fits all’ and the dimensions will vary as per the size of your pet.

Well, we just made it a lot easier for you!

Choose the most suitable pet door size you need as per the breed of your furry friend.

Dog and Cat Door Sizes by Breed

Pet Door Size

Pet Door Dimensions

Suitable For


6” x 7”

Cats, Chihuahua, Yorkie, Pomeranian, Maltese, Papillon


8” x 15”

Beagle, Pekingese, Cocker Spaniel, Poodle, Dachshund


10” x 19”

Labrador, Boxer, German Shepherd, Golden Retriever, Bulldog, Doberman


12” x 23”

Irish Wolfhound, Great Pyrenees, St. Bernard, Rottweiler, Old English Sheepdog, Great Dane

In case you have more than one pet, make sure that the step over height is low for the smaller pet, while the height of the flap should allow the bigger(in size) pet to get through as well.

It goes without saying that this is only for reference purposes as the pet sizes can vary intra-breed. You can actually try before you buy, by using a cardboard cut out of the same dimensions as the pet door.

Pet door sizes

Got any questions on choosing the best door size for your pet? Feel free to ask us in the comments section below