HS Research: Animal Communication

When I was in high school I used to do a lot of research on random topics. I'm home in Nashville this weekend, and found this page of notes on (I assume) animal communication:

Tigers
They will force their ears to go down when they are in fear. This will reveal a white spot on the back of the ear. When they are threatened or wish to threaten others they draw their lips back.

Lizards
Most of the legless lizards have feeble voices. On the whole we know very little of how lizards communicate with each other.

Dolphins
The dolphins have been the most rewarding animals used so far in these studies. They show all the emotions of excitement: fear, pleasure, inquisitiveness, welcome, teasing, concern, and distress. When they hear this distress signal, all dolphins within hearing range become silent and search for the animal sending it.

Now there is wikipedia.