New studies show that caecilians, which are amphibians like frogs, possess venom glands near their teeth that secret venomous toxins. These creatures are often mistaken for snakes because of their outward appearance—a long legless body. This discovery was led by Pedro Mailho-Fontana, who is an evolutionary biologist, and fellow evolutionary biologists Marta Antoniazzi and Carlos Jared at the Butantan Institute in São Paulo, Brazil. The glands were discovered using an electron microscope and it was found that the glands come out of the dental tissue—like those found in venomous snakes. This is the first time that such a discovery has been made in amphibians.
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