The National Park Service has warned against licking toads to get high (Image: GETTY)Hikers have been urged not to lick a species of toad in an effort to get high – because their poisonous skin makes humans very ill. The Sonoran Desert toad – also known as the Colorado River toad – is seven inches long.It is one of the largest toads in North America and is identifiable for its “glowing eyes” at night and “low-pitched toot”.They have prominent parotid glands just behind the eyes which secrete a potent toxin.These toxins can make humans sick if they touch the toad or put one in their mouth.The toad’s toxins, capable of killing a fully grown dog, are particularly dangerous for other animals.They have prominent parotid glands just behind the eyes which secrete a potent toxin.These toxins can make humans sick if they touch the toad or put one in their mouth.The toad’s toxins, capable of killing a fully grown dog, are particularly dangerous for other animals. The federal agency said ‘it can make you sick if you get the poison in your mouth’ (Image: FACEBOOK) Colorado river toad’s secretions contain powerful hallucinogenic known as 5-MeO-DMT (Image: GETTY)On Tuesday, the US National Park Service warned hikers of the danger in a post on Facebook.The post said: ‘The Sonoran desert toad (Bufo alvarius), also known as the Colorado river toad, is one of the largest toads found in North America, measuring nearly seven inches (18 cm).’What sound does it make? Its call has been described as a ‘weak, low-pitched toot, lasting less than a second’. Was that the toad or did something startle you?’These toads have prominent parotoid glands that secrete a potent toxin. It can make you sick if you handle the frog or get the poison in your mouth.’As we say with most things you come across in a national park, whether it be a banana slug, unfamiliar mushroom, or a large toad with glowing eyes in the dead of night, please refrain from licking.’.READ MORE: FBI warns of rideshare ‘trend’ criminals use to abduct children 5-MeO-DMT is classed as a Schedule 1 drug by the FDA (Image: GETTY)In recent years, smoking the toad’s secretions has become popular as it contains a powerful hallucinogenic known as 5-MeO-DMT.The US Drug Enforcement Administration lists 5-MeO-DMT as a Schedule 1 drug.According to Oakland Zoo, smoking the Sonoran Desert toad’s secretions causes euphoria and strong auditory hallucinations.Possessing the toad’s poison, known as bufotenin, is illegal in California.DON’T MISSAmericans want Truss-style tax cuts according to new pollBiden braced as midterms threaten to trigger a ‘political crisis’Tomorrow Joe Biden will be offcially a lame duck and spat out by party