6/6 Cities can be worlds of surprising opportunity for animals.
5/6 A look at survival in grasslands, from Asia's saiga antelope to the anteaters of Brazil.
4/6 The incredible ways in which animals cope with living in the planet's deserts.
3/6 A look at the animals competing to survive in the rich habitats of the planet's jungles.
2/6 A unique glimpse into the lives of mountain-dwelling animals.
1/6 Islands are wildlife sanctuaries, but surviving in isolation comes with extreme challenges