[caption id="attachment_4348" align="alignnone" width="296" caption="Squirrel monkeys are cute, but not a great choice for a pet. "][/caption] Most of us had tabby cats or Labrador retrievers, but we probably all knew a kid who had a boa constrictor or a turtle for a pet. Maybe you were that kid, the one who got the expensive terrarium and the iguana? Or are you the parent with the aquarium and the exotic fish? There's more to picking a pet, it turns out, than just finding the most ...