Answer:
A doctor might remove one from the neck of a Dracula victim.
Only two backbones and thousands of ribs.
I'm a bacteria that causes typhoid What's my name ?
White fat and fluffy, May even look like a puppy. Seems heavy but is light, Floats about without a worry, But if it turns dark you have to hurry!
I have rivers without water. Forests without trees. Mountains without rocks. Towns without houses.
What is yellow, looks like the moon and has seeds?