I wonder if it helps their depression?

Apparently crocodiles can find their way back to their territories even if they've been moved miles away using the Earth's magnetic field. So, to keep them from returning to their former, human-inhabited territories, Florida officials take them deep into the swamp and attach magnets to their heads, making them lose their sense of direction. Cool, maybe next time I go to Florida, I'll bring a TMS machine with me (or at least a magnetic therapy bracelet).