Robotic animals can help law enforcement agents catch poachers in the act -- but only if the robots are convincing enough. Learn a few things engineers are doing to make their robots more realistic in this episode of BrainStuff.Learn more about advertising on the HowStuffWorks podcasts at www.howstuffworks.com/advertisers.htmAnd to learn about your ad choices when listening to podcasts, visit https://www.howstuffworks.com/privacy.htm#ad-choices