Love south lakes animal park, one of our favourites.
Make sure you get to each of then animal feeding times as they are really good. They attach tigers food to top of huge telegraph poles and you get up close when feeding giraffe, and you can also hand feed lemurs grapes.
Small but quirky zoo. Would love to go back.
It's quite a drive down to south lakes though if you are not already in the south lake area, but worth it.
Sorry, I meant if you are staying more central lake district its quite a drive. We were staying west of Keswick and with traffic it took nearly 2 hours to drive down to the park (A class roads a lot of the way if I recall). Quite a lot of driving for a day trip with young dc.