The crate training process is much simpler than many people realize. While dogs aren’t as much of a den animal as some wild canines, they do use dens, particularly when giving birth, caring for their puppies, or when looking for some extra comfort.
Pick the right crate size. It should be as long as the dog’s nose-to-tail length plus a couple of extra inches. It should be as tall as the dog in a sitting position (not standing) plus a couple of extra inches.
At first, let your puppy explore the crate freely. Your dog shouldn’t feel forced. On the contrary – the crate should be comfy and interesting enough – it should have your dog’s favorite blanket, some toys, and so on.
Start exercising your dog before going to the crate. This will tire your pup out and make it sleepy, leading to a nap time in the crate. This nap time should be done with the crate door still open at first.