Welcome to the OneZoom tree of life explorer

An interactive map of the evolutionary relationships between 1.8 million species of life on our planet. Each leaf on the tree represents a species and the branches show how they are connected through evolution. Discover your favourites, see which species are under threat, and wonder at over 100,000 images on a single page.

The Mammals

Sponsor a leaf for yourself or as a gift

We're a not for profit organisation, your donations help us provide easy access to scientific knowledge on biodiversity and evolution. Your support will be acknowledged on the leaf of the tree that you sponsor. For musuems and other public venues, you can become a partner and install OneZoom as an eductional exhibit.