Measuring just 7.7 millimetres, Paedophryne amauensis is the smallest known vertebrate on Earth. Discovered in Papua New ...

These teacup-sized dogs are so tiny that sometimes you don’t even notice when someone is carrying one around in their purse. According to Guinness World Records, the smallest Chihuahua ever is named ...

The Kodkod is downright adorable, if you can manage to find one.

If we set aside elephants and blue whales for a moment and shift our focus to the other end of the size spectrum, the world of tiny animals is truly astonishing. Measured in millimeters, these ...

We’ve all heard of the world’s most massive sharks, both past and present. The megalodon, the great white shark, and the whale shark get most of the attention, but did you know that there are a ...

Alex Dittrich does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond ...

If you liked this story, share it with other people. KATHMANDU — A year ago, the appearance of the Asian small-clawed otter in Nepal created a buzz, given that the species hadn’t been seen in the ...

Q. You wrote that blue whales are the largest mammals. What are the largest and smallest animals of other groups? What ecological problems do animals confront by being extremely big or extremely small ...