大块头与小不点：动物奇观 Riesig groß & winzig klein

Tremendously tall – or ridiculously small: nature never ceases to surprise. 　　In Africa, we meet the largest birds in the world, ostriches, so massive they can’t even fly; and our planet’s tallest mammals, giraffes. They can stretch their necks to reach leaves up to seven metres high in the treetops. 　　In Africa’s Namaqualand, just one shower is enough to bring the desert to life: ...