The Future Is Wild

The opening episode serves as an introduction to the series, featuring many clips from later episodes and giving an overview of the series. It opens by discussing which animals (such as the big cats and bears) will disappear in a few thousand years and explains that evolution will continue. It is also the only episode to touch upon the absence of humans in the future. It does not, however, explain what will have happened to the human race. The creators said that it was up to the viewers to make their own assumptions about the fate of mankind.

The episode is set in North Europe, 5 million years into the future. The episode focuses on three hypothesized species: (1) Shagrat, a descendant of the marmot that has grown in size and developed thicker fur and a smaller nose to protect it from the cold; (2) Snowstalker, a descendant of the wolverine that has evolved sabre-teeth and white fur for camouflage; (3) Gannetwhale, a descendant of the gannet which has grown to immense size to replace the sea mammals. The episode explains that the onset of the ice age was very fast, so many animals died out. The ones that did survive had to have quick generations so they evolved fast. This is why rodents were successful. The episode follows the story of a female Snowstalker teaching her cubs to hunt, the Gannetwhale's breeding season and the mass migration to the south of the Shagrats.

The episode is set in what was the Mediterranean sea in 5 million years time. It features four species: (1) Cryptile, a lizard with a sticky frill to catch flies which it can then lick off at its leisure; (2) Scrofa, a descendant of the wild boar which has developed spindly legs to allow it to live on the rocky islands in the desert; (3) Gryken, a descendant of the pine marten which hunts Scrofa in the cracked rocks of the landscape; (4) brine flies (live-acted). Before this time in the future, the tip of Africa has collided with the southern tip of Spain, thus enclosing the Mediterranean inland. It has since dried up to become an enormous salt desert with a few lakes of ultra-saline water, as it was during the Messinian salinity crisis. The holiday islands that used to be in the sea are now mountains scattered throughout the desert.

The episode is set in South America where the Amazon used to stand in 5 million years time. It features three species: (1) Carakiller, a descendant of the mountain caracara which has evolved to replace land predators; (2) Babookari, a descendant of the uakari which lives like baboons and has discovered how to catch fish; (3) Rattleback, a descendant of an agouti which has developed tough armour and can live through quickly-passing grass fires. This episode shows that due to the cooling of the planet, the Amazon rainforest has vanished and has been replaced by grassland. Most primates have died out but the Babookari has evolved to live on the plains. They have also become much cleverer and can now make nets out of twigs to catch fish. There is also the rattleback, a heavily armoured rodent which is somewhat fireproof, and lives on a diet of Carakiller eggs, grass stems, and tubers. The episode also shows the biggest danger to these animals - fire.

The episode is set in North America, 5 million years into the future. The episode focusses on three species: (1) Deathgleaner, a massive carnivorous false vampire bat that spends the day hunting for prey in the desert and spends the night in a communal roost; (2) Spink, a descendant of the quail whose wings have become digging blades. The species lives much like the naked mole-rat of our time; (3) Desert Rattleback, a descendant of the agouti, when lives in the cold regions. The episode explains that the onset of the ice age caused the agricultural belt of the USA to turn into a desert where temperatures at night regularly reach freezing. The episode shows how the animals have evolved to cope with the harsh features of this forbidding landscape.

The episode is set in the Bay of Bengal, 100 million years into the future. The episode focuses on three species: (1) Toraton, a descendant of the giant tortoise and the largest creature ever to walk the Earth. They can weigh up to 120 tonnes; (2) Swampus, a descendant of the octopus which has formed a symbiotic relationship with a plant to house its young. They are very intelligent; (3) Lurkfish, a descendant of the electric catfish that can fire up to 1000 volts to stun prey. They are ambush predators. The episode shows that at this point of the future, volcanoes are belching out copious amounts of greenhouse gases causing the planet to overheat. It shows how swampus breed and how toraton have evolved to cope with their new size.