Green iguanas are mostly plant-eaters. Nile monitors are carnivores that actively hunt vertebrate prey. Monitors are bulkier, with longer necks, narrower snouts and thicker, more muscular tails. They ...

Diffuse coevolution is also known as multi-species or guild coevolution. It occurs when several species collectively influence one another. An example is pollination systems in which plants interact ...

Fish-eating killer whales in southern Alaska have a diverse, seasonally changing diet featuring salmon and groundfish, ...

They are fast and dangerous but these birds of prey are also supremely weird. Here's 12 of the oddest hunters of the sky ...