1 What did some people notice?
2 Who made lots of noise?
3 What were the wardens at Sri Lanka's Yala national park busy for?
4 Who is capable of predicting natural disasters?
5 How many animals have much better hearing than human beings?
6 What distance can they hear noises?
7 Where do animals feel vibration?
8 Where can migrating birds sense changes?
9 How do animals that live in groups warn the others when danger is near?
10 What don't we kno
11 Why should we take notice when our pet starts acting strangely?
12 What could they be trying to do?