[jna_sh]

That is very much the intent of the game! Frog vs toad is what's known as "folk taxonomy", taxonomy based on people's informal observations and characterisations, and not on the principles of scientific taxonomy. There's a lot of common everyday examples of folk taxonomy that people don't realise aren't "scientific", and are very confident about, and the progression of species in this game was intended to really poke at what people know makes a frog and a toad.