Primadonna: Tonka dropped a fifth of his body weight because he was depressed that he wasn't getting enough cuddles. Now Donna Kilpatrick, 16 and Jayden Doevendans, 16, have cheered him up. Handlers at an animal sanctuary in north-east Australia were mystified when their star attraction was brought low by a mystery illness. Tonka the wombat shed 20 percent of his body weight after Cyclone Yasi...