Assertion: frog's skin | /r/HasProperty | bumpy
Facets:
value: due to special structures
type: CAUSE
Source sentences:
text: Whereas frogs have smooth skin, toads' skin is rough and bumpy, due to special structures that secrete poisonous fluids from their skin.
text: This species was also much darker in colour, usually pale brown, and like the southern gastric-brooding frogs its skin was bumpy and had a slimy mucus coating.
text: Amazon milk frogs have bumpy skin and large toe pads for tree climbing.
text: Young frogs are more intensely colored than adults, whose skin is bumpy and covered with pale markings.
text: Toads tends to have dry, bumpy, and possibly warty skin.