Do lizards need to be quarantined?

You only need to quarantine an animal when you are adding it to the same tank as another animal. In case the new one has a disease that hasn't shown itself yet, you don't want both animals being sick. So no, you don't have to. I ume you aren't going to house those two together though, right? If you do, you just wasted your money on a Bearded Dragon. It'll be eaten by the snake in no time at all