We visited this zoo on MLK day. Price of admission is good. We took 3 adults and 3 kids for $60.00. The facility is great and very clean. You will need most of a day to really see it all.
Be prepared to do a considerable amount of walking, up and down hills. I'd recommend that you schedule your visit for a little warmer time of year. While it was in the upper 50's a lot of the varmints were hunkered down in their hidey-holes. Made it a little frustrating to tell the kids "that's where the -insert animal name here- lives" only to not be able to see it.
The zoo had an eatery open but I'd recommend making lunch plans on the side particularly if you are feeding a large family. We bought 2 burgers, a personal pizza, chicken strips and a turkey sandwich + drinks and it was about $60. Way to much money for the food but if you don't plan in advance it is what it is.
This would be an incredibly beautiful place to visit in the spring.
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