Our next house will have exactly one doggie door. It will lead to the mud room. This way, when Spring hits and coonhound mix digs a hole under the fence for doberman mix to sneak out through, both of their muddy little bodies will be effectively barred from the house until they've had a date with the detachable shower head.
This mud room will not be ceremonial, no sirree. No pretty hard woods, carpets, and paintings for us, that's for the entry. The mud room will be entirely tiled with a drain in the floor. The coats and shoes will live in a freestanding coat closet and shoe bin that can be closed when the shower head comes out. Every bit will be washable and/or bleachable. The shower head will have sufficient hose to reach all around the room and sufficient water pressure to reach the farthest wall. The mud room will include a shower/bath and a utility sink.
The mud room will be separated from the main house by the pantry and laundry room. Both will also be tiled and bleachable. This will be for ease of unloading the Costco bounty (without taking shoes on and off eternally) and washing off whatever the muddy dogs did to my poor work clothes.