Animal Diversity Web and National Geographic offer images of deer online. As of 2015, National Geographic's website features numerous pictures of the common North American white-tailed deer, the most widespread species of deer in the Americas.
As of 2015, Animal Diversity Web contains a wealth of photographs of animals in the deer genus Cervus, as well as many images of animals in the clade Cervidae, to which Cervus belongs. Elk, red deer and sika deer belong to the Cervus genus. Animal Diversity Web has many images of elk and sika deer, as of 2015.
Animal Diversity Web is a zoological website that maintains many encyclopedic entries on the animals of the world.