Via Boing Boing: Perhaps this Modern Mechanix article (by S. L. Schutt, May, 1934) on raising frogs in the backyard inspired the delightful monologue Chug, by Ken Jenkins.
The advantage of frog farming is the fact that you can start practically anywhere and expand gradually as your profits mount. A vacant city lot, an old orchard or even a back yard can be utilized. Due to the cannibalistic nature of adult frogs, the frog farmer needs three separate ponds, segregating the breeders, tadpoles, and small frogs.