1383-17 - Hippopotamus Amphibius - otherwise know as Hippo are plentiful in the Luangwa River. The open jaw is often used as a warning by male hippos looking after their females.

1383-14 - Hippopotamus Amphibius - otherwise know as Hippo are plentiful in the Luangwa River.

844-33204 - View of Hippopotamus (Hippopatamus amphibius), adult, in water, in Kruger National Park, South Africa, Africa

844-33203 - View of Hippopotamus (Hippopatamus amphibius), adult, in water, in Kruger National Park, South Africa, Africa

844-33202 - View of Hippopotamus (Hippopatamus amphibius), adult, in water, in Kruger National Park, South Africa, Africa

844-33197 - View of Hippopotamus (Hippopatamus amphibius), adult, in water, in Kruger National Park, South Africa, Africa

741-6511 - Hippopotamus (Hippopotamus amphibius), Okavango Delta, Botswana, Africa

741-6510 - Hippopotamus (Hippopotamus amphibius), Okavango Delta, Botswana, Africa

741-6505 - Hippopotamus (Hippopotamus amphibius) in the river Chobe, Chobe National Park, Botswana, Africa

741-6504 - Hippopotamuses (Hippopotamus amphibius) in the river Chobe, Chobe National Park, Botswana, Africa

741-6503 - Hippopotamus (Hippopotamus amphibius) in the river Chobe, Chobe National Park, Botswana, Africa

832-403288 - Hippopotamus (Hippopatamus amphibius), adult, in water, standing, on bank, Kruger National Park, South Africa, Africa

832-403287 - Hippopotamus (Hippopatamus amphibius), adult, in water, Sabi Sand Game Reserve, Kruger National Park, South Africa, Africa

832-403286 - Hippopotamus (Hippopatamus amphibius), adult, in water, Sabi Sand Game Reserve, Kruger National Park, South Africa, Africa

860-291693 - Common Hippo (Hippopotamus amphibius), Luangwa river, South Luangwa national Park, Zambia

860-291692 - Common Hippo (Hippopotamus amphibius), injured during a fight with an another male, Luangwa river, South Luangwa natioinal Park, Zambia

860-291691 - Common Hippo (Hippopotamus amphibius), outside the water, South Luangwa natioinal Park, Luangwa river, Zambia

860-291689 - Common Hippo (Hippopotamus amphibius), Zambezi river, Lower Zambezi national Park, Zambia

860-291690 - Common Hippo (Hippopotamus amphibius), showdown, South Luangwa natioinal Park, Luangwa river, Zambia

832-401076 - Hippopotamus (Hippopotamus amphibius) in Kruger National Park, South Africa, Africa

832-400132 - Hippo, (Hippopotamus amphibious) is challenging, open mouth and teeth. Angry facial expression. Behind the hippo pod. Kwando River, Bwabwata National Park, Namibia, Africa

832-400131 - Hippo, (Hippopotamus amphibious) challenging in Kwando River. Bwabwata National Park, Namibia, Africa

832-400130 - Hippo, (Hippopotamus amphibious) challenging with wide open mouth in Kwando River. Bwabwata National Park, Namibia, Africa

743-2136 - Hippo (Hippopotamus amphibius) with calf, Mara River, Masai Mara, Kenya, East Africa, Africa

743-2103 - Hippo (Hippopotamus amphibius) with calf, Chobe National Park, Botswana, Africa

743-2092 - Hippo (Hippopotamus amphibius) yawning, Kruger National Park, South Africa, Africa

1174-11392 - A hippo, Hippopotamus amphibius, yawns in a dam, Londolozi Wildlife Reserve, Sabi Sands, South Africa

832-398584 - Hippopotamus (Hippopotamus amphibius) under water looking into camera. Black and white wildlife image. Hwange National Park, Zimbabwe, Africa

832-398577 - Hippos (Hippopotamus amphibius) yawning, the animal opens its mouth upward at the sky. Black and white image. Hwange National Park, Zimbabwe, Africa

1174-11333 - A hippo, Hippopotamusﾠamphibius, yawns, head above water in a dam pool.

741-6353 - Hippopotamus (Hippopotamus amphibius), Khwai Concession, Okavango Delta, Botswana.

832-398041 - Grey heron (Ardea cinerea), hippo (Hippopotamus amphibius), water cabbage (Pistia stratiotes), South Luangwa, Zambia, Africa

832-398040 - Hippos (Hippopotamus amphibius), South Luangwa, Zambia, Africa

860-291182 - Hippo (Hippopotamus amphibius) is sitting in the water, opening his mouth and yawning. Botswana. Okavango Delta.

860-291027 - Hippopotamus (Hippopotamus amphibius). Isimangaliso Wetland Park (Greater St Lucia Wetland Park). KwaZulu Natal. South Africa

860-291183 - Group of hippos (Hippopotamus amphibius) are standing on the bank. Botswana. Okavango Delta.

860-291028 - Common hippopotamus (Hippopotamus amphibius). Eastern Shores. Isimangaliso Wetland Park. KwaZulu Natal. South Africa

860-291282 - Hippo (Hippopotamus amphíbius) in water with wide open mouth. Serengeti National Park. Tanzania.

860-291184 - Two hippopotamus (Hippopotamus amphibius) are fighting with each other. Botswana. Okavango Delta.

848-2517 - Hippo in Motlhabatsi River, Marataba, Marakele National Park, South Africa, Africa

848-2516 - Hippo in Motlhabatsi River, Marataba, Marakele National Park, South Africa, Africa

848-2515 - Hippo in Motlhabatsi River, Marataba, Marakele National Park, South Africa, Africa

1184-7041 - Hippopotamus, Amboseli National Park, Kenya

860-290850 - Common Hippo (Hippopotamus amphibius) in the grass, Masai Mara National Reserve, National Park, Kenya

860-290851 - Common Hippo (Hippopotamus amphibius) in the water, Masai Mara National Reserve, National Park, Kenya

860-290852 - Common Hippo (Hippopotamus amphibius) in the water, Masai Mara National Reserve, National Park, Kenya

860-290695 - Hippopotamus, Hippopotamus amphibius, threat-yawning in the Khwai river in the Okavango Delta's Khwai concession. Botswana.

1218-1552 - Hippos enjoying the water seen on a Safari in the Maasai Mara National Reserve, Kenya, East Africa, Africa

1218-1551 - Hippos enjoying the water seen on a Safari in the Maasai Mara National Reserve, Kenya, East Africa, Africa

832-395470 - 2 (Hippopotamus amphibius) Hippos go into the water. Lower Zambezi National Park, Zambia, Africa

832-395471 - Hippo (Hippopotamus amphibius) face looks into camera. Lower Zambezi National Park, Zambia, Africa

1174-10724 - A hippo, Hippopotamus amphibius, in a waterhole, blows air and steam out of nose, Londolozi Wildlife Reserve, Sabi Sands, South Africa

1174-10801 - A hippo, Hippopotamus amphibius, yawns while in the water, teeth visible, Londolozi Wildlife Reserve, Sabi Sands, Greater Kruger National Park, South Africa

1174-10794 - A hippo, Hippopotamus amphibius, blows air though its nose while in a waterhole, Londolozi Wildlife Reserve, Sabi Sands, Greater Kruger National Park, South Africa

860-290278 - Hippopotamuses (Hippopotamus amphibius), in the lake Gipe, Tsavo, Kenya.

860-290223 - Female Hippopotamus (Hippopotamus amphibius) touching the snout of her newborn, Kruger NP, South Africa

860-290201 - Hippopotamus (Hippopotamus amphibius) in water,Queen Elizabeth National Park, Uganda

860-290222 - Warm lights at the end of the day illuminating the head of a Hippopotamus (Hippopotamus amphibius) in a river, Kruger NP, South Africa

860-290225 - Grey heron (Ardea cinerea) at dawn posted on the back of a hippopotamus (Hippopotamus amphibius) at a waterhole. Kruger NP South Africa

860-290224 - Hippopotamus (Hippopotamus amphibius) rushing into the water, Kruger NP, South Africa

1174-10557 - A hippo, Hippopotamus amphibius, yawns in a green waterhole, Londolozi Game Reserve, South Africa

1174-10555 - A pod of hippo, Hippopotamus amphibius submerged, sunlight on the water, Londolozi Game Reserve, South Africa

1174-10521 - A hippo, Hippopotamus amphibius, open mouth, yawning, showing teeth, Londolozi Game Reserve, South Africa

1178-34943 - Hippopotamus roaring at antelope in remote water hole

1178-34942 - Hippopotamus swimming in remote water hole

1178-34941 - Hippopotamus swimming in remote water hole

1116-49347 - Hippopotamus (Hippopotamus amphibius) on river bank bends to drink, Serengeti, Tanzania

1116-49180 - Group of Hippopotamus (Hippopotamus amphibious, ) with Red-billed Oxpeckers (Buphagus erythrorhynchus) lie on sandy river bank in Katavi National Park, Tanzania

1116-49348 - Hippopotamus (Hippopotamus amphibius) turns towards camera on river bank, Serengeti, Tanzania

1116-49181 - Two Hippopotamus (Hippopotamus amphibious) face off aggressively in shallow water in Katavi National Park, Tanzania

1116-49168 - Hippopotamus (Hippopotamus amphibious) standing ankle-deep in shallow water in Katavi National Park, Tanzania

1116-49339 - Close-up of two hippo (Hippopotamus amphibius) fighting and splashing in water, Serengeti, Tanzania

1116-50380 - Hippo (Hippopotamus amphibius) stands in water staring at camera, Grumeti Serengeti Tented Camp, Serengeti National Park; Tanzania

1116-50238 - Hippopotamus pod (Hippopotamus amphibius), Queen Elizabeth National Park; Western Region, Uganda

1116-50381 - Hippo (Hippopotamus amphibius) stands in long grass facing camera, Grumeti Serengeti Tented Camp, Serengeti National Park; Tanzania

1116-50239 - Hippopotamus and calf (Hippopotamus amphibius) by Kazinga Channel, Queen Elizabeth National Park; Western Region, Uganda

1116-50379 - A backlit male hippopotamus (Hippopotamus amphibius) stands half-submerged in water, staring menacingly towards the camera. His skin is pink and grey, and one ear is folded back. Grumeti Serengeti Tented Camp, Serengeti National Park; Tanzania

1116-50383 - Hippo (Hippopotamus amphibius) grazes in long grass eyeing camera, Grumeti Serengeti Tented Camp, Serengeti National Park; Tanzania

1116-50382 - Hippo (Hippopotamus amphibius) opens mouth in foamy river water, Grumeti Serengeti Tented Camp, Serengeti National Park; Tanzania

1174-10173 - A hippo and calf, Hippopotamus amphibius, walk through a river at sunset, Sabi Sands, South Africa

1131-1620 - Pygmy hippopotamus (Choeropsis liberiensis), Ivory Coast, West Africa, Africa

765-1209 - Herd of Hippopotamuses, (Hippopotamus amphibius), Masai Mara National Reserve, Kenya, East Africa, Africa

741-5986 - Hippopotamus (Hippopotamus amphibius), Lake Jipe, Tsavo, Kenya, East Africa, Africa

741-5969 - Hippopotamus (Hippopotamus amphibius), Lake Jipe, Tsavo West National Park, Kenya, East Africa, Africa

741-5911 - Hippopotamus (Hippopotamus amphibius), Seronera, Serengeti National Park, Tanzania, East Africa, Africa

741-5907 - Hippopotamus (Hippopotamus amphibius), Seronera, Serengeti National Park, Tanzania, East Africa, Africa

741-5906 - Hippopotamus (Hippopotamus amphibius), Seronera, Serengeti National Park, Tanzania, East Africa, Africa

741-5909 - Hippopotamus (Hippopotamus amphibius), Seronera, Serengeti National Park, Tanzania, East Africa, Africa

741-5908 - Hippopotamus (Hippopotamus amphibius), Seronera, Serengeti National Park, Tanzania, East Africa, Africa

832-389233 - Hippopotamus (Hippopotamus amphibius), Luangwa River, South Luangwa National Park, Zambia, Africa

832-389232 - Hippopotamus (Hippopotamus amphibius) relaxing on another hippo, humor, Luangwa River, South Luangwa National Park, Zambia, Africa

1174-9161 - Hippopotamus looking at yellow-billed stork in a waterhole, Moremi Reserve, Botswana, Africa

1174-9234 - A hippo, Hippopotamus amphibius, raises its head above the water and closes its eyes in the sun, Londolozi Wildlife Reserve, Greater Kruger National Park, South Africa

1174-9233 - A pod of hippos, Hippopotamus amphibius, rest in a water hole, one yawning, Londolozi Wildlife Reserve, Greater Kruger National Park, South Africa

832-388843 - Hippo (Hippopotamus amphibius) bathing in mud, animal portrait, Queen Elisabeth National Park, Uganda, Africa

1112-5432 - An adult hippopotamus (Hippopotamus amphibius) with a common moorhen, Ngorongoro Crater, Tanzania, East Africa, Africa

1174-8892 - Hippo Hippopotamus amphibius in waterhole yawning and showing its teeth, Sabi Sands, South Africa

1174-8640 - Two hippos, Hippopotamus amphibius, fight on land, mouth open, blood visible, Sabi Sands, Greater Kruger National Park, South Africa

1174-8769 - A group of hippopotamus in the water and a herd of elephants gathering at water hole

1174-8784 - Two hippos, Hippopotamus amphibius, open their mouths while fighting in water, teeth and blood visible, Sabi Sands, Greater Kruger National Park, South Africa