A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
Cat families usually play best in even numbers. Cats and kittens should be acquired in pairs whenever possible!
156
Meysi is one of the world's smallest dogs, measuring in at just 7cm tall, 12cm long, and weighing a meagre 250 grams (only slightly heavier than a hamster!)
11
Sheep, goats, octopuses, and toads have rectangular pupils.
7
The Basenji dog is the only dog that is not able to bark.
4
Domestic pigs average a top speed of about 11 miles per hour.
182
Nicole Kidman is scared of butterflies.
65