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)
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P.S. - Could "G-Force" be based on a real rodent spy case? (Click here.)