Apostrophes Practice AK

Add apostrophes where they are needed.  Take out unneeded or incorrect apostrophes.

1. The dog licked its paws.
2. Dogs are so gross!
3. It's hard for me to even imagine where that dog's been.
4. It can't have been any place that's too clean!
5. But, it's impossible to teach a dog not to lick its paws.
6. Dogs have been licking dogs' paws for ages.
7. I would never lick a dog's paws, so don't even ask me to.
8. What's strange is that cats clean their paws by licking.
9. Why doesn't it gross me out when I see a cat lick its paws?
10. If you're a dog, don't lick your paws; it's gross.