Crates were originally created to transport pets in cars, airplanes, and trains. The crate provides a safe and secure confined area for a pet to dwell during transportation. But because of a dog's nature as a den animal, crates are now commonly used as an indoor dog house, or safe area for pets to retreat to in times of anxiety. When used correctly and humanely it is also an excellent tool in potty training a dog.

When choosing a crate it's important to choose a size which allows the pet to stand up and adjust positions. But it is also not recommended to choose a crate which is too big for the pet because in the event of movement during transportation the pet may not be able to support itself safely in an area which is too big. There are also different types to accommodate one's needs. Wired Crates are more durable and give the pet less of a feeling of claustrophobia, but exposes the animal to the elements, it is especially effective when dealing with situations when one needs to keep a steady eye on a pet like a medical situation or with puppies. Soft Crates address issues of storage since they are often collapsible and light weight, but they are also less sturdy and not recommended for vehicle transportation or anxious pets who can chew or scratch their way out of the crate. Plastic or Solid Crates are the standard for air travel and provide more privacy, and coverage, they also provide the best protection from the elements while creating a den like experience for the pet.