The frog can move on by itself or you can bring it with you. I would kill it myself. Just to let you know, American bullfrogs are not native to California and are devastating native frogs such as the red-legged frog. This may sound heartless, but I would destroy it and every bullfrog I find in California. I would rather have red-legged in my fountain if I were you, than the invasive, large predatory bullfrog.

Of course if you follow my advice, make sure you can tell the difference between the bullfrog and the native frogs. I wouldn't want you destroy the natives, some of which are in real trouble. California Frogs and Toads On this list I = introduced species and F = expatriated species.