i have two year old boxer who is wonderful until we try to leave the house-she willingly goes in her crate in the morning -which is not problem, but then when we come home-if we try to leave-she refuses to go in her crate and if we try to leave her in the house-she tries to bite on our clothes (not our skin)or cling onto our legs-so we are kind of caught-b/c she snaps to go in her crate and won't let us leave-it is a struggle-yet as i said she does it in the morning without a problem-it is if we try something out of her routine-any suggestions????