Pandas (Giant ones) diets consist mainly of bamboo shoots. As well as Giant Pandas, another animal that shares this diet is the bamboo rat
A platypus. Platypi are found in Australia and are the only other mammal apart from the echidna that lays eggs
I must say this question bothered me. Pigs are actually some of the cleanest animals, but due to the disablitity they have, not being able to sweat, they must roll in mud to keep cool. Pigs will actually try very hard to keep clean, however they often end up rolling in the mud so they do not die of over heating
Many animals have blue tounges, the most common one being a giraffe or okapi. Chow chows, a breed of dog, also have blue tounges.