Synapsida

A possum In America, the word "possum" is usually used to describe a moderately-sized, somewhat rat-like, animal that has grey...

Red river hog (boar) As zoological knowledge has advanced, the number of species that we know about has changed regularly, and not jus...

Livyatan melvillei , a Miocene species (It was supposed to be ' Leviathan ', but the name was already taken) Sperm whales are m...

Woodland jumping mouse Life can be hard, especially out in the wild. Injuries can be common, and among the most painful are broken bones...

While there are some bats that could challenge them for the title, by most measures, shrews are the smallest of all mammalian species. The...

Pygmy hog By some definitions, the term "pig" can really only be applied to those species that are most closely related to the...

Anancus arvernensis As the climate cooled around 11 million years ago, the forests of Europe began to thin out once more, something that...