Dogs, by making us more efficient predators, gave us time to think.

They are also efficient predators of smaller animals and their young, keeping some animals' populations in check.

Taken over three years, the photos illustrate exactly why great whites are considered one of the world's most efficient predators.

Arguably the most efficient predators in the history of the planet.

This proves to all the colonists that there is a deadly and efficient predator native to the island.

Cat senses are adaptations that allow cats to be highly efficient predators.

The corlm are extremely efficient predators that use their beaks to kill.

It is a very efficient predator, but not intelligent.

In the early Mesozoic, a number of fish families were beginning to develop adaptations which would make them lighter, faster and more efficient predators.

However, birds and reptiles generally make less efficient large predators than advanced carnivorans.