tail

Like for example, when roosting, Mexican free-tailed bats pack in at a whopping 1,800 adults per square meter.

But although medics have mended rats' tails and performed keyhole surgery on pigs, no-one has ever been operated on in space.

Ring-tailed lemurs are just as suited to life on the ground as up in the trees, and that makes them far more adaptable than most of Madagascar's lemurs.

I can't make heads or tails of that.

Here, there is a massive chamber big enough to swallow three jumbo jets – nose to tail – filled with cool, fresh water.