Least Concern (LC)
Widespread and stable, for now. Being common is not the same as being safe, and several of these were assessed decades ago.
Paradise Flying Snake
The tree-dwelling serpent that splays its ribs and flattens its body into a triangular lifting surface when it glides.
Peregrine Falcon
The sky's guided missile, folding into a 320 km/h (200 mph) stoop with the same navigation math built into real missiles.
Pileated Woodpecker
A crow-sized woodpecker that chisels rectangular holes into trees to reach the ants inside.
Pine Marten
Cream-bibbed tree acrobat with ankles that rotate through 180 degrees for climbing up and down trees.
Pronghorn
A 40 to 59 kg grassland runner that can average 65 km/h over 11 km, backed by an extraordinary capacity to consume and process oxygen.
Rainbow Trout
A stream fish whose sex is set by a Y-chromosome gene unrelated to any known sex-differentiating gene.
Red Deer
The UK's largest land mammal: a stag of up to 190 kg that regrows its antlers each year and roars through the autumn rut.
Red Fox
Fluffy white-tipped tail, a pounce that may be aimed using Earth's magnetic field, and an omnivore's habit of eating whatever is available.
Red Kangaroo
Australia's biggest marsupial, hopping at 64 km/h on powerful hind legs, balanced by a tail it can also rest on.
Red Kite
A deeply forked tail it steers with, relatively weak talons that keep it mostly on carrion, and an astonishing comeback in the UK.
Red Lionfish
Swims at half its prey's speed and still wins six lab chases in ten.
Red Squirrel
Double-jointed canopy acrobat that cracks a nut in seconds and buries seeds that may grow into trees.
Red-Bellied Piranha
Razor-sharp interlocking teeth, a red belly, and a school that doubles as cover from predators.
Red-Eared Slider
Whether a slider hatches male or female depends on how warm its nest was.
Red-Eyed Tree Frog
A neon-green rainforest sleeper whose flash of scarlet eyes and bright flanks may give a predator pause long enough to escape.
Red-Lipped Batfish
A Galápagos batfish whose genus walks the seabed on modified fins.
Red-Tailed Hawk
The copper-tailed hawk whose cry voices bald eagles in TV ads.
Reticulated Python
The longest python, up to 33 feet of snake with black X's running down its back in a diamond-like pattern.
Ringed Caecilian
A legless burrower about 40 cm long whose newborns eat their mother's skin and drink milk from her vent.
Rock Dove
A cliff bird turned city bird, fed on "pigeon milk" as a chick, and in its trained homing form able to find its way back to the loft from far away.
Rock Hyrax
A stub-tailed, rabbit-like rock climber with singing males, whose closest living relatives are elephants and manatees.
Roseate Spoonbill
The pink wader that hunts by touch, swinging a slightly open spoon-shaped bill through the shallows and snapping it shut when it contacts prey.
Ross Seal
The least-studied of Antarctica's ice-breeding seals, a loner with enormous eyes that often dives past 300 metres.
Ruby-throated Hummingbird
A metabolic dynamo that can beat its wings more than 50 times a second and cross the Gulf of Mexico in a single non-stop flight.
Conservation categories are from the IUCN Red List of Threatened Species. AnimalTracks is independent of IUCN.