The native Giant Earthworm of the US was thought extinct at one point, but has been found in a small area somewhere in the Northwest. Of course they are endangered now.
Thanks for information guys! Had no idea of this worm "Driloleirus americanus" existance. Would be nice if it recovers and some are breed by worm farms. A 1.5 foot or more worm would be great to feed the larger frogs .
Remember to take care of the enclosure and it will take care of your frog !