Zoos have barriers to keep you safe and to keep the animals safe.
Barriers come in different forms. Fences, walls, railings, ropes, and landscaping to name a few.
There are even signs posted. "Danger Stay Back" or "Stay On The Walkway"
MANY times EVERY day I have to tell people to get down, stay on the sidewalk, stop dangling your child into the exhibit.
No joke.
Stay on the public side of the barrier.