In a small space such as an apartment, keeping dogs safely separated is likely to mean using the crate and rotate approach, where one dog is crated out of sight and reach of the other dog, who is left at liberty. The dogs’ positions are then periodically switched. Of course, no dog should be crated all day, the idea is to rotate the dogs at least every few hours. Sometimes, rather than a crate, dogs are simply kept in separate rooms or gated and let out separately. In a larger space such as a home with a back yard, one dog normally stays in the yard while the other is in the house. Their positions are then rotated. Care should be taken, however, if there is a sliding glass door where the dogs can see each other, as constant, close visual contact would only cause stress. The outside dog might need to be kept in an area where he does not have access to the sliding glass door, or the inside dog would be restricted from the room where the door is located. Regardless of the management setup, both dogs should receive adequate daily exercise. If two people are available, the dogs could be taken out for walks, hikes, or runs separately early in the morning, for example, before the owners go off to work. If there is only one person available, the dogs will need to be taken for exercise one at a time.