Fatal frogs across south america one can find a variety of frog unlike found in europe. apart being different colours, such as yellow and blue, these frogs are poisonous. some of them are poisonous that even touching can be fatal. the embera choco people of colombia have using toxins from frogs for many years in to hunt. however, since the arrival of other types of weapons in the rainforest, the art of making dart guns started to disappear. however, it is still possible to find craftsmen making dart guns the trunks of palm trees. the actual dart is covered from the frog’s skin. the poison will remain strong to kill animals for more a year. about 55 of the 135 species of south american frogs are toxic. the frogs are brightly coloured to warn predators not to touch them. some species of frogs produce toxins may be useful for mankind as painkillers. a number of species are by researchers in the states to investigate the possibility of using toxins for benefit. by licking the frog’s skin scientists judge the level of toxins. there is no danger of being poisoned, though, as frogs in captivity gradually become poisonous.