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.
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. 
