Andy Rouse / RF- Bengal Tiger (Panthera tigris tigris) female 'Noor T39' carrying cub. Ranthambore National Park, India. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- African elephant (Loxodonta africana) with young in front of rainbow. Masai Mara National Reserve, Kenya. Vulnerable species. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- Grizzly bear (Ursus arctos horribilis) leaping through water, chasing salmon. Katmai National Park, Alaska, USA, August. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- African elephant (Loxodonta africana) mother and baby with rainbow in background. Masai Mara Game Reserve, Kenya, January. Endangered species. (This image may be licensed either as rights managed...

Andy Rouse / RF- Four Burchell's zebras (Equus quagga) drinking, Etosha National Park, Namibia. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- Female African lion (Panthera leo) Mala Mala, South Africa. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- Hippopotamus (Hippopotamus amphibius) aggressive threat display. Katavi National Park, Tanzania. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- Chimpanzee (Pan troglodytes) being groomed whilst eating berries. Mahale National Park, Tanzania. Endangered species. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- Hippopotamus (Hippopotamus amphibius) threat display, South Luangwa National Park, Zambia. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- Grizzly bear (Ursus arctos horribilis) in alpine meadow, Katmai, Alaska. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- Grizzly bear (Ursus arctos horribilis) grazing in meadow, Katmai Coast, Alaska. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- Chimpanzee (Pan troglodytes) with a mouth full of berries, Mahale National Park, Tanzania. Endangered species. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- Asian Elephant (Elaphas maximus) with Black winged stilt (Himantopus himantopus) showing aggression, Minneriya National Park, Sri Lanka. Endangered species. (This image may be licensed either as r...

Andy Rouse / RF- Bengal tiger (Panthera tigris tigris) female, Machali, Ranthambore National Park, Rajasthan, India. Endangered species. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- African elephant (Loxadonta africana) mother and calf, Mala Mala, South Africa. Endangered species. (This image may be licensed either as rights managed or royalty free.)

Andy Rouse / RF- Asian elephant (Elaphus maximus) two young calves playing with trunks twisted, Minneria National Park, Sri Lanka. Endangered species. (This image may be licensed either as rights managed or royalt...

Andy Rouse / RF- Mountain gorilla (Gorilla beringei beringei) silverback male playing in habitat, drunk on bamboo shoots, Volcanoes National Park, Virunga mountains, Rwanda. Note - if gorillas eat an excess of bam...

Andy Rouse / RF- Mountain gorilla (Gorilla beringei beringei) silverback male feeding on bamboo shoots, Volcanoes National Park, Virunga mountains, Rwanda. Note - if gorillas eat an excess of bamboo shoots they c...