Many dogs and wolves places their tails between there legs and lay on their backs to show submition and to show they pose no threat to any other dog or wolf. But when a they want to show dominance, they stare at eat other and expose their teeth, showing aggresion.

http://www.nhptv.org/natureworks/nwep3a.htm

http://i374.photobucket.com/albums/oo184/mastiffsj80/bilde.jpg

They use the "Round Dance" or the Wiggle Dance". The Round Dance is used to show how the food smells, and as for the Wiggle Dance, it is used to show where the food is at shown from the sun.

http://en.wikipedia.org/wiki/Waggle_dance

http://en.wikipedia.org/wiki/Round_dance_%28honey_bee%29

http://www.bearcountrybees.com/education/bee-basics/types-of-bees/worker-bee/

http://animals.howstuffworks.com/insects/bee5.htm