Its important to keep in mind that your dogs crate is well ventilated.
Dogs that have heavy hair coats, short muzzles or are overweight will do best in a wire crate. Wire dog crates provide the best airflow.
If ventilation is a concern, dont have the crate against any walls or have anything resting on top of it.
If you want to use a plastic air travel type crate, look for ones with additional ventilation in the back panel. If you find that the plastic crate is not providing enough
Cozy Dog Crates