28 “Red, my boy! Good morning!” Dr. Venn detaches his arms from the cuffs of his chair and holds them wide for the dog. Red wriggles his way forward, his whole body in a wag. “GRANDDAD, KEEP THEM ON THE CHAIR,” Madeline tells him. “YOU’RE STILL TOO COLD.” Dr. Venn ignores her for the moment and digs out a few treats for Red. The dog obediently sits. Dr. Venn is less obedient, trying to lean forward and pet Red’s head at the same time his granddaughter is still tucking a blanket around his legs and lower torso. “I’ve turned up the heat on the gel,” she tells me, “but it won’t do him any good if he’s not in contact with it. GRANDDAD, ARMS BACK IN, PLEASE.” She carefully repositions his arms inside the cuffs. She might be bossy, but she’s gentle. “We tried to make him stay home this morni