Hi Frank, interesting topic. I really enjoyed all the comments made in the thread. So, do frogs have intelligence and therefore have the ability to learn? I think so I have been keeping African clawed frogs for many years and noticed they have an acute awareness when it comes to wave and sound stimuli.

According to Andreas Elepfandt, "Attempts to condition frogs generally fail. Xenopus, however shows good learning abilities. It is the only frog so far in which long-term memory and complex learning have been shown. This demonstrates that Xenopus can associate sensory inputs with variable meanings and learn complex relations in its environment." [Xenopus Sensory Perception, 1996]

I think the idea is worth pursuing.