Eric Baccega / Coalition of two African male lions (Panthera leo) resting on the banks of the Luangwa river, dry season, South Luangwa National Park, Zambia

Eric Baccega / Lioness (Panthera leo), aggressively rebuffing male lion banks of the Luangwa river, South Luangwa National Park, Zambia

Nick Garbutt / Adult bull African Elephant (Loxononta africana) trunk reaching up to feed on foliage on the banks of the Luangwa River, South Luangwa National Park, Zambia, October

Nick Garbutt / Adult bull African Elephant (Loxononta africana) reaching up to feed on foliage on the banks of the Luangwa River, South Luangwa National Park, Zambia, October

Nick Garbutt / Adult male Hippopotamus (Hippopotamus amphibius) posturing in agressive 'yawn' behaviour, Luangwa River, South Luangwa National Park, Zambia, November

Nick Garbutt / Adult male Hippopotamuses (Hippopotamus amphibius) posturing in aggressive 'yawn' behaviour, Luangwa River, South Luangwa National Park, Zambia, November. Digital composite (two frames stitched togeth...

Nick Garbutt / Adult bull African Elephant (Loxononta africana) reaching up to feed on foliage on the banks of the Luangwa River, South Luangwa National Park, Zambia, October

Andy Rouse / African elephant (Loxodonta africana) breeding herd crossing river at sunset, South Luangwa, Zambia (non-ex)

TJ Rich / Hippopotamus in Luangwa river at sunrise, South Luangwa National Park, Zambia

Martha Holmes / Group of Hippopotamuses in river (Hippopotamus amphibius) Luangwa River, Zambia, Africa.

Martha Holmes / Hippopotamus yawning, mouth open (Hippopotamus amphibius) Luangwa River, Zambia

Martha Holmes / Cape buffalo {Syncerus caffer caffer} large herd drinking in Luangwa river, Zambia.