BEST ANIMAL PHOTOS OF 2017-Hippos

Hippos, abundant in the delta and in the rivers that feed it, graze by night on land and rest by day in water. Males fight over territory, females protect their young—and their long, self-sharpening canine teeth can be lethal to intruders.

PHOTOGRAPH BY CORY RICHARDS, NATIONAL GEOGRAPHIC

Best animal photos 2017 NATGEO