1.   But the two researchers agreed with the paleontologists who now reject the idea that the sauropods regularly used their tails defensively.

2.   Deletion of a single part of a gene in the bacterium can prevent it from using comet tails to speed the infection.

3.   Even if that was possible, he said, using the tail like a whip might have been both painful and damaging to dinosaurs.

4.   The sauropods used their tails, Myhrvold thinks, not for war but for love.

5.   Officials said even elephant tails are used to make decorations.

6.   Tigers use their tails for balance when they run through fast turns.

7.   They also use their tails to communicate with other tigers.