The justices accepted the Justice Department appeal of a case dealing with a tape showing pit bull dogs attacking other animals and one another in staged confrontations.
The charity's ways of dealing with this problem include a treadmill for dogs to use, and a top floor room where they can be let loose to play, complete with giant lorry tyres and a paddling pool.
Loews hotels provides dog walking maps on arrival, have special do not disturb signs for dogs in residence, and staff are totally used to dealing with pet guests.