The hairy frogfish doesn't pursue prey. Instead, it wobbles along the sea floor, finds a hiding spot, and uses a worm-like appendage on its head to lure in a victim. Its body is covered in spines which resemble strands of hair — camouflaging it amongst seaweed, assisted by colour-changing abilities.

A resident of the Tibetan Plateau, the ground tit lives above the treeline at elevations no lower than 3,000 metres (9,800 ft). It moves along the ground in unpredictable dashes and hops — said to resemble a bouncing rubber ball — and digs burrows for nesting and shelter.

The ornate horned frog is also known as a "Pacman frog" and referred to as a “mouth with legs” — and it is, appropriately, quite a glutton. It'll eat any prey that fits in its enormous mouth, from insects to lizards to mice to birds to other frogs. It'll even attempt to consume prey larger than itself.

The call of a blacksmith lapwing is a noisy and metallic ‘tink tink tink’ — like a blacksmith hammering on an anvil. It's an exceedingly bold bird when defending its chicks, known to attack raptors and go after elephants using the sharp spurs on its carpal (wrist) joints.

The mistletoebird of Australia and Indonesia specializes in feeding on mistletoe berries — digesting the flesh and depositing the sticky seeds onto branches in neat lines, where they quickly germinate and grow. The bird is nomadic, in near-constant search of mistletoe berries.

The Lake Pátzcuaro salamander is only found in a single lake in Mexico, with an estimated population of less than 100 in the wild. For 150 years, nuns in a nearby convent have been raising a population in captivity — keeping the species alive, but also making them into "cough medicine".

The wingless midge — reaching up to 6 mm (0.24 in) in length — is Antarctica's largest permanent land animal. It survives the year-round cold by burrowing, losing up to 70% of its body water, and producing antifreeze-like proteins. Without wings, it sheds less heat and avoids being blown out to sea.

The Okinawa rail is Japan's only flightless bird — found exclusively on the island of Okinawa. Before nightfall, it uses its powerful clawed feet to climb trees, where it sleeps to avoid nocturnal-hunting pit vipers. In the morning, it drops back down in a graceless fluttering of wings.

Nomura's jellyfish is among the largest jellyfish species in the world — measuring up to 2 metres (6.6 ft) in diameter and weighing up to 200 kg (440 lb). Starting out as small as a grain of rice, it can grow this large in less than a year.

The Galápagos pink land iguana is found only on the slopes of a single active volcano on one of the Galápagos Islands. Named for its pink scales, this land iguana was described as a distinct species in 2009 and is considered 'critically endangered' — with fewer than 200 left.

The night parrot was believed to be extinct for almost 80 years. Despite widespread sightings throughout mainland Australia, this nocturnal parrot is one of the country's most elusive birds. It lives in isolated arid regions, spending most of its time on the ground and hiding within spinifex grass.

The armoured rat is covered in sharp spines that can grow as long as 3 cm (1.2 in) — a great defence against the snakes and ocelots that share its wet rainforest habitat. Additionally, if all else fails, this rat can drop its tail to confuse or distract a predator.

The Asian openbill uses its "open bill" to locate and grab its favourite prey — freshwater snails — using the sharp tip of its curved, lower mandible to extract them from their shells. It is a common species of stork throughout South and Southeast Asia.

Native to sub-Saharan Africa and the Nile River Valley, the Egyptian goose has now settled in N. America, much of Europe, and parts of the Middle East. Although normally quite reserved and shy, males will become boisterous and aggressive during their breeding season to attract a female.

The moaning frog is named for its call, which sounds like a slow and drawn-out moan. This burrowing frog is native to southwestern Western Australia, where its calls can keep people up at night — it's recommended to gently flood the frog's burrow each night until the moaning male moves on.

The ears of the long-eared hedgehog — longer than half the length of its head — are much larger than those of other hedgehogs. It lives in deserts and steps, using its astute hearing (and smell) to track down food, and its ample ears to radiate heat, staying cool in its sweltering home.

The coppersmith barbet — a small bird about 16 cm (~6 in) long — often falls victim to bullying by other birds. Blue-throated barbets have been observed evicting coppersmiths from nesting holes, while red-vented bulbuls steal berries from male coppersmiths that are trying to feed their mates.

The black drongo keeps its neighbourhood clear of predators by fearlessly assailing them — as a result, other birds like orioles, doves, babblers, and bulbuls like to nest near the drongo. But the drongo is also a trickster, mimicking the calls of raptors to scare birds into abandoning their food.

The ribs of Anderson's crocodile newt are untethered to any muscular attachments at their ends and jut into the skin along its back, giving it an armoured appearance. When threatened, it adopts an anti-predator posture — using its sharp rib tips to pierce the rows of bumps on its sides.

With a wingspan of almost 1 metre (3.3 ft), the spectral bat is the largest bat in the Americas and the largest carnivorous bat in the world. It's believed to find avian prey by smell and is attracted to distress calls from small bats caught in mist nets. It's also known as the "False Vampire", because it was previously thought to feed on blood.