Has it got scales?
No, it hasn't.
Can it fly?
Yes, it can.
What has it got?
It has got a shell.
Can it run?
Yes, it can.
What's this?
It's a shark
Is it an insect?
No, it's not.
Can it crawl?
No, it can't.
What's this?
It's a snake.
Has it got fur?
Yes, it has.
Is it a reptile?
Yes, it is.
Is it a mammal?
Yes, it is.