A zoo is a great place to spend the day. For the price of a movie ticket, you can spend all day watching the animals watch you. (Note to self: Find out why do we have to pay admission if we are entertaining the animals). I wish I lived closer so I could buy a season pass, just to go photograph their tenants more often. Last time I went, the big cats were all sleeping, but it forced me to spend more time in other areas that I might have overlooked. Take your time and don’t be in a hurry.
And remember, “someone” is always watching you.