What, lions? Lions aren't even the best cat (tigers FTW). But let's move away from cats for just a moment...
Praying mantis? They kill and eat snakes ten times their size. Snakes. Something that, should everything be right in the world, would eat them. They kill up the evolutionary predator ladder.
Tiger sharks have teeth specifically designed to cut through giant sea turtle shells.
Ravens and crows, for their brain size, are smarter than anything (humans included).
Mantis shrimp punch at 10,000g (the acceleration of a .22 bullet) with club fists stronger than any engineered ceramics we've been able to invent. They don't even have to hit; the shockwave alone is enough to boil water and murder their prey.
Peregrine falcons dive at up to 242 mph. Most people never even control a vehicle moving that fast. No other animal can achieve such speeds without mechanical assistance.
And don't even get me started on extinct animals. The ankylosaurus weighed six tonnes, was covered in armor, and grew a stone club on its tale to break predators' kneecaps. Megalodon had teeth bigger than most people's hands (think of a great white shark except five times the size; that's right, Jaws would be a snack for one of these things).
Lions have, what, a goddamn mane? A title they never earned based upon a false understanding of their ecology? Genocidal tendencies towards hyenas? Lions have good PR, and that's about it.