Csakany placed skin from humming frogs onto the body of a frog that does not seem to have any special relationship with tarantulas and is ordinarily eaten by them (the Lowland tropical bullfrog Leptodactylus andreae, a leptodactylid. Csakany used one of its synonyms: Adenomera andreai [sic]). After grabbing the skin-wearing Leptodactylus specimens, the spiders examined them, and released them unharmed. Again, this supports the hypothesis that the tarantulas recognise ‘partner’ frogs after receiving certain chemical signals.