How can you NOT love the zoo? It's the perfect way to relive your childhood.
You walk in and you're greeted with either the Rainforest or the main zoo. Both are great choices. You have your typical array of animals, but it's such a large zoo, especially for a city of Cleveland's size. You can definitely spend a whole day at the zoo and not feel bored at all. The plaques outside of each of the exhibits are also very informative. But if you're not one for reading, it's enough to just look at the animals.
There's a lot of playgrounds and petting areas for small children. I know that if I had a small child, I'd definitely be tempted to head over to those areas. For another time in my life I guess.
In the summer, they usually host a benefit dinner for the animals. It's usually well catered and people mill around from exhibit to exhibit tasting and enjoying the animals. I'm definitely hoping to score tickets one day.