Old wooden barrel can be used as pet house to accommodate your dog or cat in garden. Barrel would nicely blend in the garden. However you need some support work for the barrel to stay where you put it and not to roll away
Indiviual runs allow separation for the dogs. Dual system heat/AC unit keeps temperture comfortable year round if required. Dog doors allow in and out for each dog. Human creature comforts include a flat screen TV mounted in the dog house.