Medium
Creatures with real weapons and little interest in using them on anything your size.
African Wild Dog (Painted Dog)
A coat no two dogs wear the same way, four-toed front feet, and a hunt run at up to 30 mph until the prey tires.
Alligator Gar
Described as a 100-million-year-old living fossil, armored in interlocking ganoid scales, with two rows of fang-like teeth in its upper jaw and a swim bladder that can work as a lung.
Antarctic Fur Seal
The hyper-dense furred beach warrior that came back from commercial extinction and is now declining again.
Army Ant
A colony of up to a million sisters that clings together as a living nest, then raids the forest floor as a fan-shaped army.
Asian Water Monitor
A semi-aquatic lizard that can reach 2.5 m, scent a rotten carcass up to 100 m away and prey on any vertebrate it can overpower.
Assassin Bug
The predatory bug that covers itself with the carcasses of ants, a disguise that seems to fool jumping spiders.
Bald Eagle
An apex fish hunter with a talon grip ten times as strong as an average human's, carried on a wingspan of up to eight feet.
Bare-Nosed Wombat
A tough-skinned rump, cube-shaped scats, and the strength to crush an attacker against the burrow roof.
Binturong
Shaggy Southeast Asian bearcat that smells like hot buttered movie popcorn, climbing through tropical forest canopies with a thick prehensile tail.
Blue Wildebeest
A bearded grassland grazer whose foreleg muscle is substantially more efficient than a cow's.
Boa Constrictor
A nonvenomous snake that stops its prey's heart from pumping, and one mother on record who had daughters with no father.
Bobcat
A spotted, short-tailed stalker that steps its back feet into its front-foot prints to cut the noise of the hunt.
Bombardier Beetle
Miniature artillery specialist that blasts attackers with a chemical spray up to 100°C, fired in rapid pulses.
Bonobo
The Congo forest ape where the females rule the roost.
Bottlenose Dolphin
Each dolphin is believed to keep its own signature whistle for life, and dolphins have passed the mirror test for self-recognition.
California Sea Lion
Males bark like dogs, and a mother can find her pup among hundreds by its call.
Candiru
The translucent, thin catfish that slips under a fish's gill cover and lets the host's own blood pressure fill its mouth.
Cane Toad
Unstoppable neotropical chemical tank, turned loose in Queensland in 1935 to eat cane beetles, armed with shoulder glands whose toxins often kill the Australian native predators that try to eat it.
Caracal
Explosive feline acrobat capable of vertical anti-gravity leaps up to ten feet and mid-air bird snatches.
Clouded Leopard
Longer fangs for its skull size than any other wild cat, and ankles that rotate so it can hang from the branches by its back feet.
Clydesdale Horse
A Scottish farm horse first bred in the mid-1700s for heavy hauling, with males standing up to 19 hands on feathered ankles.
Cockatiel
A small crested parrot from Australia's open country that can sing a human melody in near-perfect sync.
Coconut Crab
Land arthropod of up to 4 kilograms, with coconut-cracking claws and a leg span of up to a meter.
Collared Peccary
A 15 to 28 kg hoofed mammal that is not a pig, with self-sharpening canine teeth and a scent gland above its tail.