While it might be fine for a crate-trained dog to be boarded in a small area, boarding in a cage can cause anxiety for a dog not familiarized to small areas. Plus, older dogs with health issues might need more room to move around. If you don’t like the idea of your dog staying in a small cage the whole time, look for a boarding facility that offers upscale boarding. Ask around for places that have lots of room for your dog and is reputable.