come with some sort of divider so that a crate can grow with the pet. The correct size for a crate is just enough room for the animal to stand up without hitting their head, lay down and stretch out their paws and to turn around unimpeded. When using a crate in the home, make sure the crate is placed in a location that is comfortable. Avoid drafty areas near doors or windows, areas in the direct sunlight (which may become excessively hot), or areas adjacent to a radiator or heat source. A crate for use at home can be larger than one used for travel. Crates used for international transport should adhere to international regulations stipulated by IATA. If the crate is too big the pet will be able to use one end for rest and sleep while using the other as a toilet, which will undermine one of the purposes of crate training. A dog's natural instinct is to relieve themselves outside of the area in which they eat and sleep. So if a crate is small enough that they cannot possibly defecate while having enough room to sleep well away from it, a dog will 'hold it' as long as they possibly can. It is this instinct that facilitates using a crate as an aid for house training. During air travel, an oversized cage does not permit the pet to use the sides easily as a brace during turbulence. Likewise, crates that are too small pose a health risk by restricting and preventing proper air flow and ventilation. This is of particular concern to domestic pets of a brachycephalic (short-headed) breed where the requirement is to allow extra room due to the high incidence of death in these pets during transport. Due to their shortened airways and limited ability to cool themselves through panting, overheating while traveling poses a risk to the health of such breeds. Training When crate training, it is important to use a training approach that is recommended by a reputable vet, trainer, breeder or a trusted training book. Crate training is often practiced with new puppies as a method of house-training. Puppies naturally do not want to dirty the place where they sleep, so they will try as much as possible to hold it while they are in their crate. Of course, young puppies can not control their bladders for long: about one