Adult animal Animal head Animal theme Buck-tooth Calm Close up Color image Cooked Cooling Cute Dangerous Day Dental Face Famous place H. a. amphibius Head Herbivore Hippo Hippopotamus Hippopotamus amphibius Ivory Lake Large Lounging Muddy National park Nature Nile hippopotamus No people Non urban scene One animal Outdoors Part of Photography Pink Safari animals Safari park Serengeti Serengeti national park Side view Sleeping Submerged Swimming Tanzania Tooth Travel destination Tusk Vulnerable species Water Waterhole Watering hole Wildlife Wildlife refuge World heritage site