I never knew this existed until I saw a sign on southbound 288 several months ago.
http://www.thecrocodileexperience.com/
It's a small family run crocodile/alligator and other animals zoo. It's pretty intimate as you are just on the other side of a fence from the animals unlike the Houston zoo. It's only 40 minutes south of Houston and 20 minutes north of Lake Jackson off of 288. I highly recommend it. Your kids will love it.
http://www.thecrocodileexperience.com/
It's a small family run crocodile/alligator and other animals zoo. It's pretty intimate as you are just on the other side of a fence from the animals unlike the Houston zoo. It's only 40 minutes south of Houston and 20 minutes north of Lake Jackson off of 288. I highly recommend it. Your kids will love it.