Mighty Mouse, Atom Ant, Secret Squirrel...

The movie "G-Force" stars a squad of U.S. government-trained guinea pig spies on a mission to thwart an evil billionaire from taking over the world.

While the plot is pure Hollywood, nature is full of critters great and small that humanity has harnessed for espionage, protection and moral support.
• Dolphins
• Sea Lions
• Fish
• Sharks
• Dogs
• Penguin
• Insects
• Robot Chicken (just kidding)
(more)
P.S. - Could "G-Force" be based on a real rodent spy case? (Click here.)