Gorillas can catch human colds and other illnesses.
205
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6
The most expensive dog in the world is the Tibetan Mastiff; worth $1.5 million.
2
A hippo sleeping underwater automatically rises to the surface every ~4 minutes and breathes without waking.
23
The world's smallest mammal is the bumblebee bat of Thailand, weighing less than a penny.
60
15% of snails survive digestion by birds and are found alive in their droppings, potentially leading to the spread of snail populations.
1
Sea otters hold hands while sleeping so they don’t drift away from each other.
104
A koi fish, named "Hanako", was owned by several individuals over many years and lived to be 226 years old, dying in 1977.
6