Lizards can make great pets. They stay in cages, so they don't make a mess of your home, and other than requiring specific temperatures and humidity levels, they are fairly low-maintenance. Their personalities tend to be funny and entertaining, and they bond with their owners more than you might think. However, there are many different types of lizards, and you should do your due diligence before buying one. Here are some questions to ask the vendor before buying a lizard that is up for sale.