My research on horned frogs leads me down the road of not for me to breed. You can find good books, caresheets, and great info on this website if you take the time required. Actually a google search of "horned frog care" found me this website via a link in a thread of a caresheet with detailed info on breeding horned frogs. I think its something like get a healthy boy and a girl of sexual maturity, stimulate the cool dry season and let them follow their instincts to bruminate for two months minimum, simulate the rainy season, after they wake up put em in an appropriate mostly aquatic environment and let them be frogs, then if all goes well you get to take care of a lot of tadpoles!