For an entry fee of just EUR 3, this Parc gets a big thumbs up. It's got a surprisingly large selection of animals in lush exotic parkland. There is only a small snackbar and they don't allow you to bring a picnic but it will thrill the kids for a good couple of hours.
In the area of Nice airport and a good place to go if it's raining! It's a large pyramid shaped glass dome with tropical gardens and a butterfly section.