I don't really know the difference between frogs and toads. When I was a wee lad I would pick one or the other up and the result was warts on my fingers.
Frogs are smooth skinned and totally aquatic, whereas toads are dry skinned and lumpy and survive well on land. They can produce a white substance from their skin that you may have been sensitive to. Do some research.
Yes, The French are always very Tactile when we nip over to France on our booze cruises ....... We've have taken to wearing gloves to stop the backs of our hands from getting to damp or wet.... :)D