This document discusses three popular types of dog crates for sale: plastic crates, wire crates, and soft crates. Plastic crates are sturdy, comfortable, and good for travel. They provide a safe, quiet place for dogs at home or away. Wire crates are best for home use but don't have flexibility of plastic crates. Soft crates are made of fabric or canvas and are usually used to transport smaller dogs that don't chew. Choosing a crate depends on the dog's size and intended use.