A five-year-old-cat who now goes by the name of Callahan is healing at the hospital after a Massachusetts state trooper found him lying on the side of the road inside Boston's Callahan Tunnel on Tuesday. Callahan is healing at MSPCA-Angell in Jamaica Plain after the trooper rushed him to the adoption center. "I saw the cat injured and lying motionless inside the tunnel next to the road and it was clear he'd been struck by a car and needed help," said trooper James Richardson, who was driving through the tunnel in his cruiser, in a statement. "We all love and root for animals and there was no way I was going to leave him-I'm really glad he's now in safe hands. "I was very relieved when my dispatcher suggested I bring this poor cat to the MSPCA and received quick confirmation that indeed he had been settled in and was getting the medical care he needed in order to recover," he added. That cat had experienced head trauma, a broken pelvis and scrapes. Dr. Cindi Cox, head shelter veterinarian at the MSPCA, examined Callahan when he came in and was surprised that the young cat survived at all. "It always amazes me that cats can survive these kinds of strikes," she said. "Fortunately his pelvic fractures aren't severe enough to require surgery; they'll heal with about six weeks of cage-rest and I expect his balance will improve once his head trauma resolves." Callahan isn't neutered and has no microchip or identification tags. He arrived dirty and scared, but is very friendly, said officials. "This is probably a cat who survived on hand-outs from kind people but who likely lived alone, without a home of his own," said Alyssa Krieger, adoption center manager at the MSPCA-Angell, in an announcement. The entire MSPCA adoption center staff extended its gratitude to trooper Richardson for coming to the stricken cat's aid. "He's a hero to us and certainly to Callahan," said Krieger. Callahan will be neutered and micro-chipped ahead of his adoption, which is expected to take place in about six weeks. Meanwhile, he'll be placed in a foster home to recover.