Les Harris, then President of the Dingo Foundation, gave evidence that his opinion based on years of studying dingoes is that a dingo could have enveloped the head of a baby in its mouth and carried the weight of a baby over long distances. He produced photographs of dingoes enveloping the head of a baby-sized doll in its jaws. However, forensic expert Professor James Cameron gave evidence that, based on studying plaster casts of dingo jaws, it was impossible for a dingo to open its jaws wide enough to encompass a child's head.