What Am I Riddles

Question: Not only a seat, it’s also a head - what is it?

Question: There is a couple that is always together. They go anywhere they want to go. They can't be separated. No one can touch them. They are the size of a ping pong ball. What is it?

Question: I always murmur but never talk, i always run but never walk, and I have a bed but I don't sleep. What am I?

Question: When I'm born, I stay in the sun A little time, and I make crazy When I'm old, I'm worth a fortuneWhat am I?

Question: Soft and cuddly, I'll pull on your heart.
But take my last name and I'll tear you apart.

What am I?