Spotted Handfish vs Tarantula Hawk vs Eurasian Hoopoe vs Axolotl: A Fish That Walks on Its Hands, a Wasp That Feeds Your Living Body to Its Kid, a Bird That Wears Rotting-Meat Perfume, and a Salamander That Regrows Its Own Brain

I have a rule in this house: any two things can be compared, and the more unrelated they are, the more important the comparison. So today I locked a walking fish, a wasp with a war crime for a nursery, a bird that marinates itself in the smell of a forgotten fridge, and a salamander that treats decapitation as a mild inconvenience into one room and asked them to justify their existence on the only three axes that matter: how cool, how weird, and how gross. None of these animals agreed to this. That is the beauty of the format.

The lineup, and why it makes no sense

A fish (Tasmania), a wasp (the American Southwest), a bird (basically all of Eurasia and Africa), and a salamander (one lake in Mexico City). They share no habitat, no diet, and no dignity. Perfect.

Cool

The tarantula hawk runs away with the cool category on raw menace alone. Its sting scores a 4.0 on the Schmidt sting pain index, tied for the very top of the scale with the bullet ant. Justin Schmidt, the entomologist who built the scale by getting stung on purpose for years, described it as "blinding, fierce, shockingly electric," like "a running hair dryer has just been dropped into your bubble bath." The one mercy: the agony only lasts about three to five minutes, which is roughly how long it takes to finish screaming.

The axolotl counters with a superpower that sounds made up. It regrows lost limbs, chunks of its heart, its spinal cord, and significant portions of its brain, and it does all of this without scarring. Lose a leg, grow a leg. It is the closest thing biology has to a save point.

The spotted handfish is cool in the underdog sense: it does not swim so much as walk, scuttling across the seabed of the Derwent estuary on modified pectoral fins that look exactly like little hands. It has no swim bladder, so it mostly just... strolls.

Weird

The handfish is a member of the anglerfish order, so it even has a tiny lure (an illicium) on its snout, but it uses that heritage to be the most low-energy fish alive. It grows to about 12 cm and travels almost nowhere.

The axolotl never grows up. It stays in its larval form for its entire life, keeping those frilly external gills fanned out behind its head like a permanent bad hair day, and it keeps the accidental grin that made it an internet celebrity. Bonus weirdness: its genome is about ten times larger than yours. You are outgunned genetically by a smiling water baby that never finished puberty. You can actually force it to grow up by adding thyroid hormone to its water, but why would you do that to it.

Gross

This is a two-animal cage match, and both entrants are disgusting in ways that will stay with you.

The Eurasian hoopoe: during breeding, the female's preen gland pumps out a thick brown secretion that smells like rotting meat. She rubs it into her feathers and her eggs on purpose, because the antimicrobial chemicals in it are actually manufactured by symbiotic bacteria living in the gland and they help fight off pathogens. And if you get too close to the nest anyway, the chicks turn around, hiss at you like a snake, and fire streams of liquid feces in your general direction. Charming family.

The tarantula hawk: the adult is, honestly, a pacifist. Both sexes sip flower nectar and are important pollinators of milkweed. The horror is entirely in the parenting. The female stings a tarantula into permanent paralysis, drags the still-living spider into a burrow, and lays a single egg on it. The larva hatches, chews a hole into the spider, climbs inside, and eats it alive from the inside out, carefully saving the vital organs for last so the spider stays fresh for as long as possible.

One animal is gross because it smells terrible and its children throw poop. The other is gross because it invented a slow-motion inside-out buffet. These are not the same kind of gross, and I love that the category is big enough for both.

The reckoning

The handfish is too pure and too endangered to lose to; it just cannot win a fight it refuses to swim to. The axolotl is the crowd favorite and the smartest long-term investment. The hoopoe is the grossest by smell. But only one contestant maxes out all three axes at once.