Lost bright green and yellow spotted pet green tree frog named Hopper at Modesto Central Park.

I lost my pet green tree frog, named Hopper, while I was at the Modesto Central Park last weekend. He managed to slip out of my hands during a picnic and hopped away into the bushes. He's about 3 inches long, bright green with some yellow spots. I'm really worried about him! If anyone sees him, please let me know!