Hello!! I know the airport wants dogs to be able to stand in their crate. When traveling, my dog is most often sleeping. If I'm traveling with dog and stopping every couple/few hours and using the crate for the dog to sleep at night, can I use a much shorter in height crate, as long as the length is comfortable? If you know of a discussion, please point me to the correct forum. Or.. a definitive answer would be most appreciated. Thanks! Ken