Your penguin

The dwarf deer or mouse deer is the smallest even-toed ungulate on the planet, a proud inhabitant of the forests of Southeast Asia.

The hellish vampire squid doesn't live up to its formidable name at all. His underdeveloped muscles do not even allow him to resist predators, so you have to rely on the sudden release of a cloud of fluorescent ink and escape.

The Kakapo parrot is a forest inhabitant of New Zealand that has lost the ability to fly in the process of evolution.