This is pretty good: https://twitter.com/ZooHannibal
"We love watching them feed the sea lions for the same reason that we love our fathers. The only alternative is terror."
"Your quarter doesn't buy you a handful of food for the billy goat. It buys the forgiveness of all the billy goats you are unable to feed."
"If you were to escape, tortoise, you would be forgotten almost immediately, invisible. It is your enclosure that makes you a god."