There are two basic types of crates: a plastic “airline kennel” and a wire cage. Each has certain advantages. The plastic crates are usually more portable than wire cages and are more “cozy” for the animal. Wire cages typically have more width and height space than plastic cages of approximately the same size. The angled design of the plastic crates makes their width at the base more narrow than the box design of wire cages. You can buy wire cages that are easily collapsible and can be carried like a suitcase, which is helpful when traveling. Most wire cages have removable pans that can slide out for easy cleaning. If you select a wire cage, cover the back completely and top and sides 1/2 way down with a towel to create a den-like atmosphere. If you do not cover a portion of the cage, the dog may not feel safe and secure because of the openness of the cage.
The ideal situation for housebreaking is to use a size crate that is 2 times the puppy’s body length and big enough for the puppy to stand-up, turn around, and lie down in. However, for most people, it is not feasible to purchase new crates as the puppy grows. The best alternative is to buy a crate that will be large enough for your dog when he grows up. As an adult, the dog should be able to lie down comfortable on his side as well as stand, sit, and turn around without difficulty. For housebreaking a puppy, the crate should can be made smaller by using a partition (made of a safe substance) or a divider panel to limit space. If the puppy has too much room, he will eliminate in one area of the crate and sleep in another, thus increasing the time it takes to housetrain the puppy.
Plastic crates and wire cages are available at most pet stores and by mail order from companies such as wholesaler R.C. Steele (800) 872-3773 and Doctors Foster & Smith (800) 826-7206.