Contact: Lori Oliwenstein
California Institute of Technology
Caption: One way a male Drosophila shows aggression is by "lunging," in which it rears up on its hind legs and snaps down with its forelegs on its opponent.
Credit: Caltech/Liming Wang and Michael Maire
Usage Restrictions: With credit as given above.
Related news release: Caltech scientists discover aggression-promoting pheromone in flies