How to watch David Attenborough's Natural Curiosities: Season 4 (2013) on Netflix Israel!

The Australian platypus is so distinctive that some early biologists thought it was a hoax, and the midwife toad led scientists to rethink evolution.

Parthenogenesis is the highly unusual, asexual means by which some species can reproduce, among them the Komodo dragon and the ordinary garden aphid.

In the 18th century, celebrity rhinoceros Clara changed Europeans' understanding of the species. A hedgehog's spines provide a splendid natural armor.

An owl's face and eye structure help it fly through the night, while the giant squid's enormous eyes help it thrive in the darkest depths of the sea.

The cuckoo deposits its eggs in the nests of other birds and hides a dark secret. The audacious death's-head hawkmoth deceives bees to steal honey.

Gorillas were once regarded as violent predators but are now recognized for their gentler side, just as vampire bats are now known to save lives.

The discovery that electric eels really are electric has inspired technological innovations. Some plants, too, are known to emit electrical signals.

The emperor penguin is the only species that raises its young in the Antarctic winter, and North American wood frogs can survive after being frozen.

Birds can learn, share tips and weave the most intricate nests by scavenging their materials, while spiders spin webs entirely from their own silk.

Sexual identity among animals rarely goes against the norm, but it does with hyenas and seahorses, who each exhibit characteristics of both sexes.

Careful observation has solved some of nature's most fascinating mysteries, from bird migration to the relation between caterpillars and butterflies.

A cheetah and a flea have nothing in common, except their abilities for amazing feats. Observation and modern technology set the records straight.

Once thought to be just clever mimics, orangutans and crows alike are now known to excel at making tools and solving problems.

Species with amazing elasticity include the anaconda, which can gorge on food twice its size, and the camel, which stores fat, not water, in its hump.

The blue whale grows to its enormous size through its unique diet, and the delicate flamingo has the only bird beak designed to eat upside down.

The hippopotamus and the capuchin monkey are among the species that can use natural remedies to heal themselves and ward off pests.

Salamanders can regrow lost legs, and deer can replace shed antlers. Why don't all species have such powers of regeneration?