Cats and dogs can hear ultrasound.
350
Sifrhippus was a species of horse about the size of an average duck and roamed North America 56 million years ago.
2
By putting a frog in a bucket of milk, scientists following up on an ancient Russian way of keeping milk from going sour have identified a wealth of new antibiotic substances.
9
In 1955, the citizens of São Paulo were so upset with their government that they elected a rhinoceros named Cacareco (meaning rubbish) to the city council in protest, with over 100,000 votes.
18