Life StoriesA personal view of the natural world I dare say my mind would wander over a range of animals remarkable for the extravagance of their reproductive techniques Sir David Attenborough, when asked which animal he would like to be if he returned to Earth. This fantasy reincarnation was reserved only when in racy company, said the distinguished wildlife broadcaster. But in more sober company, he would go for a sloth, which hangs upside down all day. The