Camping in Houston State Parks – best facilities, wildlife, scenery?

After years of day trips to state parks, I decided to try renting cabins for over-night stays and I'm hooked. With spouse and little kids, it works out perfectly. I've tried Brazos Bend and have scheduled for Huntsville Park.

Would appreciate any recommendations on other good parks in a 4 hr radius from Houston which have a cabin, lake/river, & abundant wildlife. My kids are really into reptiles – is there any trick to spotting lizards and snakes when hiking at Huntsville Park & other parks? Thanks!