This chart gives average size usage only. Your pet's size may be larger. If your not sure, go up at least one size.
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Breeds shown are for approximate sizing in relation to your own pet. If your pet will be spending more than a few hours per day, 3 to 5 times per week, in the carrier or crate, the size should go one size larger for each additional 4 hour period per day you pet spends in the crate or carrier. This does not apply to traveling with your pet. Only for day to day use of pet carriers and crates.

Small Cats Chihuahua Maltese Pomeranian Shih Tzu Silky Terrier	Deluxe Pet Porter Jr. 19 X 12.3 X 10.8 Double Door Deluxe 19 X 12.3 X 10.8 Pet Taxi 19 X 12.56 X 10 Sky Kennel 21 X 16 X 15 Imperial Crates 24.5 x 18.9 x 21 Dynasty Crates 25 x 19 x 22    length x width x height
Medium Beagle Bulldog Cairn Terrier Cats Chihuahua Chow Chow Cocker Spaniel Dalmatian Lhasa Apso Maltese Miniature Poodle Pekingese Pomeranian Pug Shar-Pei Shih Tzu Silky Terrier Toy Poodle West Highland White Terrier	Deluxe Pet Porter Jr. 23 X 14.5 X 12 Double Door DeluxeT 23 X 14.5 X 12 Kozy Carrier 18 X 10 X 9 Deluxe Edition 24.5 X 18 X 22.5 Sky Kennel 27 X 20 X 19 Imperial Crates 30 x 22 x 24 Dynasty Crates 30 x 21 x 25 Pet Taxi 23 X 15.2 X 11.84  length x width x height
Intermediate Bulldog Cairn Terrier Cats Chow Chow Dalmatian Lhasa Apso Pug Shar-Pei West Highland White Terrier	Deluxe Pet Porter Jr. 24 X 16.3 X 14.8 Double Door Deluxe 24 X 16.3 X 14.8 Deluxe Edition 30 X 21 X 25.5 Sky Kennel 32 x 22 x 23 Pet Taxi 24 X 16 X 14  length x width x height
Large Airedale Terrier Boxer Bulldog Cairn Terrier Cats Chow Chow Dachshund Dalmatian Fox Terrier Labrador Retriever Lhasa Apso Miniature Poodle Pug Scottish Terrier Shar-Pei Standard Poodle West Highland White Terrier	Deluxe Pet Porter Jr. 26 X 18.8 X 16.5 Deluxe Edition 35.6 x 24 x 28.5 Sky Kennel 36 x 24 x 26 Imperial Crates 36 x 24 x 27      length x width x height
Extra Large German Shepherd Standard Poodles	Sky Kennel 40 x 27 x 30 Imperial Crate 42 x 28 x 32 Deluxe Edition 42 x 28 x 32.5      length x width x height
Giant Great Danes Mastiffs Rotweilers Lg. German Shepherd	Deluxe Edition 48 x 30 x 34.4 Imperial Crate 48 x 30 x 32      length x width x height
This chart gives average size usage only. Your pet's size may be larger. If your not sure, go up at least one size.