Answer:
When it was young, it had a tail. When it grew up, it had knees
What kind of dog keeps the best time?
I quack and have webbed feet. What am I?
I have a long neck and spots on my body. I am the tallest animal on land. What am I?
I am small but can carry objects many times my weight. I live in organized colonies. What am I?
I love spinach.