anthropomophism

Sis sent me a video of dolphins making bubble rings, I loved it. Inevitably, I started to think about contained behavior vs. wild behavior. Would they learn to make these playthings in the wild? I know animals play, sometimes without an obvious relation to prey/predator learning or dominance/submission. Perhaps no relation at all: what meaningful behavior does the otter learn by sliding down a wet muddy hill repeatedly, or as in Winterdance , buffalo taking turns sliding down a snow covered hill on their butts onto a frozen lake in Alaska?

There was a comment chain (with the dolphin video) about the dolphins looking at their bubble creation with appreciation, identifying that thought as anthropomorphic. My thought is this: humans so often think that emotions and behavior are human based, not animal based, when it seems obvious to me that all animals have complex emotions on some level. My dogs feel fear, jealousy, happiness, sadness, loss, have abandonment issues, have humor and so on which is easily determined by body language, just as you can tell by body language what another human is feeling. What is the difference?

Additionally, the dophins are described as the 'second' most intelligent animals on the planet. How is it not ridiculous that humans get to create the intelligence test, take it themselves, then crown themselves king? Or queen as the case may be? What is intelligence and could it be defined as ability to be happy & survive? Would we not then rate near the bottom of the 'smart' heap? At this moment we are steadily killing ourselves and the planet at the same time... how intelligent is that?