The pads are not on the bottom of the feet. Despite them being called "pads" they are not located on the bottom of the foot. They are the dark spot on the side of each thumb. Located on the side facing the chest.

This is an example of a Nuptial Pad on my male Samurai Blue. His are quite large. People please stop flipping your frogs over looking for Nuptial Pads. They are on the top of the foot.
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