We mammals all come from a common rat-like ancestor that evolved during the Jurassic period. This ancestor probably spent most of its time running from dinosaurs and eating insects, which it must have done pretty successfully since it evolved into more than 5,000 species, including whales, mice, dogs, cats, elephants, rhinos and humans.



With that many species scampering around, growing fur and birthing live young, some mammals are bound to be pretty unusual. We've gathered together some of the weirder ones for your pleasure.