When a male gentoo penguin "falls in love" with a female penguin, he searches the entire beach to find the perfect pebble to present to her.
25
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
Parrot parents "name" their children with a signature call.
112
Cymothoa exigua is a type of parasite that enters through fish's gills, eats their tongue, and then replaces it.
6