Mammals from tiny shrews to giant anteaters have specialised in eating insects. Some have even pursued their prey into the skies.

Special tools like chisel sharp front teeth and underground dwelling enable this group of mammals to feast on roots and seeds.

Predators and prey must evolve speed, endurance and manoeuvrability to outwit each other, and the pack hunters must maintain order in the ranks.

With perfect streamlined bodies and great underwater speed, seals, dolphins, porpoises and whales became the new hunters of the sea..