Claim: Poison dart frog, which are diurnal or simply active during the day, have about 28 structural classes of alkaloids and its most toxic species is the Phyllobates terribilis.
Evidence: These species are diurnal and often have brightly colored bodies. Diurnality is a form of plant or animal behavior characterized by activity during daytime, with a period of sleeping or other inactivity at night. About 28 structural classes of alkaloids are known in poison frogs. The most toxic of poison dart frog species is Phyllobates terribilis.