Whoever designed this did not have dogs. The locks on all three doors are easy for dogs to open. We have three dogs and even the 3 month old puppy has no trouble getting out of the crate. They should have used locks that worked and had more bars blocking the areas near the locks. We have been tying the door shut to use the crate. On the plus side the height is nice being taller and it does look better than a basic crate in your home.