He received several broken bones and worst of all a traumatic brain injury that left him in critical condition. Millions of his brain cells were destroyed leaving him unable to move. He was unresponsive and his chances of recovery were low.
As part of his therapy Colonel, a specially trained Golden Retriever, was brought in to work with an occupational therapist. As soon as he saw the dog, there was an immediate change in Caleb’s motivation and awareness. From that point he began to steadily improve.
After a month of intense therapy and with the help of Colonel, Caleb had become much more aware and alert, and his motor skills were vastly improved. He's also grateful for Colonel's companionship. "I guess he likes me a lot!" he says with a smile. Source
As his father says, bringing in a dog changes the area from a hospital to a place to play.