SO normal.. get ready for more of it... if you want him to be crate trained.. you have to put up with the crying... when he cries.. take him out to pee... and then right back in.. unless you dont' care where he sleeps
he'll keep crying until you let him out.. then he'll realize that this is where he is sleeping. .layla LOVES her crate.. she can't get in there fast enough at night!