Riddle Head

What has to be broken before you can use it?

I’m tall when I’m young, and I’m short when I’m old. What am I?

What month of the year has 28 days?

David’s parents have three sons: Snap, Crackle, and what’s the name of the third son?

What has many keys but can’t open a single lock?

What is black when it’s clean and white when it’s dirty?

What has lots of eyes, but can’t see?

What has hands, but can’t clap?

What has one head, one foot and four legs?

Speaking of rivers, a man calls his dog from the opposite side of the river. The dog crosses the river without getting wet, and without using a bridge or boat. How?