Although there are differences between a dog crate, kennel, and carrier when it comes to airplane-approved pet carriers, they’re all the same. However, outside of that, pet crates or kennels and pet carriers are different things. Pet crates/kennels could be considered as the Jack of all trades – they can be used for traveling by plane, car, train, and around the home, if you’re trying to housetrain/kennel train your dog. Pet carriers, on the other hand, are used for small breed dogs while traveling by car or foot. There’s also a difference in the materials: kennels or crates are made of plastic or other durable material (especially airplane-approved crates), while dog carriers are made of fabric, which can be more comfortable for the animal.\r