sentences:  Because it is of comparatively large size for a poison dart frog, the Golfodulcean poison frog can store a large amount of poison in its skin.Captive examples lack the toxin, which suggests they do not manufacture the poison themselves, but instead acquire it from a species of insect or other small invertebrate on which they feed.Scientists have not determined the batrachotoxin source for any species of the genus "Phyllobates", although toxic birds from New Guinea likely get batrachotoxin from a small beetle of the family Melyridae.