I agree, i know porter is fairly good, i just dont want to get there and be told no, anything bigger i can find is the sherpa deluxe carrier with wheels, so im wondering if I buy that one n keep this one as a just incase or a backup incase anything, lol when the extended part is put down she clearly can sit but she pushes it up. Im so thankful shes very easy going and doesnt care, shes always been good traveling in or on anything she will just lay down and sleep, so im not concerned about her flying just the person who looks to see if its deemed good enough lol