not an attack
by some morning ZOO shock jock.
The Big Bang Theory Season 7, Episode 10
...the order is petting ZOO first,
then buy vegetables.
The Big Bang Theory Season 8, Episode 24
The last time
we went to the ZOO,
The Big Bang Theory Season 5, Episode 4
You fooled me with that goat at the petting ZOO,
you will not fool me again.
The Big Bang Theory Season 8, Episode 7
We go to the ZOO all the time.
The Big Bang Theory Season 5, Episode 12