The sun rises on an average day in the American tropics in May, and we watch as Peruvian penguins, Colombian rainforest monkeys and strange iguanas all try to beat the heat.

The summer solstice can have a large impact on Asian animals; driving Vietnamese macaques into the water, making cranes dance, and inspiring one weird fish to go for a walk.

Christmas Day in New Zealand means summer, and while the kiwi shuns the sun, sea lions, penguins and dolphins make the most of the extra hours of daylight.