Parrotfish make themselves a kind of mucus 'sleeping bag' which masks their smell from predators and keeps parasites away.
4
It's possible to train your cat to use the toilet as a litter box and even flush afterwards.
109
The largest earthworm on record was found in South Africa and measured 22 feet.
151
The elephant brain weighs about 6,000g.
274
The elephant shrew’s closest relative isn’t a shrew — it’s actually an elephant
9
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
A scorpion can hold its breath for up to 6 days.
19
The sound of a tiger's roar can travel a distance of up to 2 miles (~3 km).
255