Answer:
I'm a marine mammal with flippers that balances balls on my nose and barks. What am I?
When it was young, it had a tail. When it grew up, it had knees
I can change color to match my surroundings and I can move my eyes in different directions at the same time. What am I?
I am a large mammal that lives in the ocean and sprays water from a blowhole. What am I?
I am a tiny insect that gives you sweet food. I live in a hive and have a painful sting. What am I?
Sometimes I am white, sometimes I am dark. Most people love me. What am I?