Kelly the Dolphin: "She Taught Her Calf"

The most fascinating information from the week:  Kelly the dolphin learning that she can trade paper litter for fish, taking it one step further and tearing the paper into small pieces for more fish...Read the article to find out what she does with birds

Here it is.  Seriously, worth your time. 

Her cunning has not stopped there. One day, when a gull flew into her pool, she grabbed it, waited for the trainers and then gave it to them. It was a large bird and so the trainers gave her lots of fish. This seemed to give Kelly a new idea. The next time she was fed, instead of eating the last fish, she took it to the bottom of the pool and hid it under the rock where she had been hiding the paper. When no trainers were present, she brought the fish to the surface and used it to lure the gulls, which she would catch to get even more fish. After mastering this lucrative strategy, she taught her calf, who taught other calves, and so gull-baiting has become a hot game among the dolphins.