A journey like no other - full of moments of joy and danger. For animal parents in the wild, the stakes could not be higher, with success ensuring the future of life on our planet.

A look at how parents balance risk and reward when raising young in open grasslands. Whilst abundant grass promises plentiful food and places to shelter, this cannot guarantee success.

Water is essential to all life on earth. But too much or too little can be disastrous. Parents must get their timing just right to successfully raise the next generation.

Raising young in the complex world of jungles requires ingenuity. Parents must become masters of their environment, learning to exploit every opportunity.