Dog carriers are an incredibly popular, useful and safe way to transport small to mid-sized dogs and puppies. When shopping for a pet carrier, it is important to know what sort of traveling needs that you will be needing to meet. If your travel plans include long distances, a larger hard-sided crate type of carrier may be ideal. This type of dog carrier will also work for larger dogs, as well as mid-sized dogs and puppies. They are very sturdy and will make ease of "accidents" easy to clean-up.