Tony Heald / RF- African elephant family (Loxodonta africana) crossing desert landscape. Namibia, Kaokoland. Endangered species. (This image may be licensed either as rights managed or royalty free.)

Edwin Giesbers / RF- Western lowland gorilla (Gorilla gorilla gorilla) rolling in grass. Endangered species. Captive, Apenheul zoo, the Netherlands. (This image may be licensed either as rights managed or royalty fre...