Looking at these smart and adorable Pink Dolphins,
it is sad to know that they are an endangered species.
Info from Wikipedia:
The pink dolphin lives in the freshwater of the Amazon River.
This species looks like the grey dolphin, but individuals are bigger,
and instead of a dorsal fin they have a hump on their back.
Their tails are also bigger.
The pink dolphin has been listed as endangered by the International Union for Conservation of the Nature due to pollution, over fishing, excessive boat trafficking and habitat loss.
The brain of the river dolphin is 40% larger than a human brain.
A wonderful clip on YouTube by PBS