The skull of a giant rat compared to a common rat. The extinct rat's skull was 25% bigger than this giant rat's skull! (Image: Ken Aplin, CSIRO)
I’ve always thought of rats as being quite small and lightweight creatures – even verging on dainty. Well someone forgot to tell the rats in East Timor to keep an eye on their calorie count…archaeologists have discovered rodent bones that suggest the biggest rat that ever lived weighed about six kilograms. That’s about as much as a three month old baby!