Dreaming of a zoo can be a sign of confinement. The animals inside a zoo are all kept behind bars, making sure they can’t interact with people and keeping them locked up. Thus, dreaming of a zoo can be a reflection of your own personal life. Perhaps you are being confined, not necessarily physically but emotionally.
This dream of being at a zoo is indicative of you feeling like you are placed under observation and scrutiny. People come to the zoo to monitor your actions and observe your appearance. Therefore, a dream of being at the zoo is symbolic of your self consciousness. You hate being there for all to see and worried about what to do with so many people.