Discover how extreme animal sizes, from the massive blue whale to the tiny shrew, shape their survival strategies.

Q. You wrote that blue whales are the largest mammals. What are the largest and smallest animals of other groups? What ecological problems do animals confront by being extremely big ...

While the blue whale holds the title as both the largest and heaviest animal ever known, other whale species can weigh ...

Detached orca fins scored with distinctive tooth marks suggest that killer whale cannibalism is happening — and it might ...

When you think of fish you normally imagine cute little creatures in an aquarium or maybe an animal the size of a dinner ...