Pink dolphins, also known as Amazon river dolphins or boto, are a species of freshwater dolphin found primarily in the Amazon River and its tributaries. They are known for their distinctive pink coloration, which can vary from light pink to a deeper hue, especially in males. These dolphins can grow up to 8 feet long and are highly intelligent, often displaying playful behavior. These dolphins have a unique adaptation to their river habitat, including a flexible neck that allows them to navigate through the complex underwater environment. Pink dolphins primarily feed on fish, crustaceans, and other aquatic animals. They are considered a vulnerable species due to habitat loss and pollution in their natural environment.