If a child born from circus artists and he or she spends a childhood with parents in the circus - they call it a "sawdust's
The worse thing that gets in between people in the show is their EGOS. Sometimes someone can get jealous and poison someone else's animal. It never happened in this particular circus, but performers hear the stories... The trained animal is the most important thing for it's owner.
Strangely, but not every small city officials want to accept a circus for a few days to build there a tent and do a show. Like if they sale drags or girls there or something... Maybe they forget that circus is ART!