brown bumpy texture
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brown bumpy texture sounds more like toad, frogs usually have smooth skin whereas toads are warty
Yes, your description "brown and bumpy" describes a toad slightly better than a frog.
If it was not such an old posting I'd modify the ID - just on those grounds (and Miked's comment) alone.
Trawling history - purely personal.
Lat/Lng: 52.1, -0.8
OS grid ref: SP8554