Why do you need a dog kennel?
Why do you choose the furniture-style dog crate?
Choose a crate that will provide adequate space when your dog reaches its' full, adult size, large enough to stand up without having to hunch and to lie down with legs outstretched. However, don't buy a crate that is too large -- it won't provide the feeling of safety and security that a dog enjoys in a properly-sized crate.
Be gentle, and gradually acquaint your puppy or dog with his new home.
Remove your dog's collar, tags, and leads before he goes in his crate.