I'm not disagreeing, but how else would we be able to observe behavior like this? Approaching dolphins in the wild, at least in America, is dangerous for the dolphins and illegal. Not to mention, if we WERE lucky enough to observe a dolphin doing this, what is the chance we'd be able to get evidence? Not every scientific diver brings a camera and has it ready at the right times, it's very unlikely. We've done myriads of studies that have allowed us to realize just how intelligent they are, and that's something we'd have never known or could have tested in the wild. It's a F***ing disgrace that they're kept in poor conditions and poor health. But zoos are a chance to let the average joe observe something they likely would have never seen, and thus understand and appreciate it. It's a flawed system, but those captive animals are there to help everyone understand and appreciate their wild counterparts.
Driver helps ducklings to join their mother
Girls use teamwork to remove rat from house
Epic gymnastics balance beam save (Mykayla Skinner)
Feeding the fish
Bartender skills
Dogs walking each other bang heads
Penalty kick trick
Man gets onto moving cargo ship
Dust devil hits baseball field
Race leader gets legs tangled up in pole vault crossbars before the finish line