英语听力：冰河绿洲—19

In the heat of the day, hunters can afford to slow down and rest in the shade. It’s one of the advantages of a high-protein diet.

Llamas originated here in North America are the regular visitors to the spring. The strange-looking tapir is common too. And there’s another animal that’s even more bizarre, a glyptodont.

This lumbering vegetarian is no threat to the llamas, but it does arouse their curiosity.

The glyptodont is short-sighted and wary, but it has little to fear from llamas. They are easily warned off and soon head back towards the spring.

But as the day cools down, another scent is in the air, alerting the tapir’s ultra-sensitive nose to danger. The llamas pick up the signals too.

It’s the jaguar, back on the prowl.