Yes. They said how big Burms can get and that while more are gentle some can turn on you. And of course they said to not release them if you can't handle them. And they said Tegus get bitey if not handled enough. Also said they are among the smartest of all lizards. I don't know much about tegus so I don't know how true all that is.
I like the show over all. It's actually a spin off of Dogs 101 and Cats 101. They go over the pros and cons of every animal but always make them look desirable.