Kinyongia vanheygeniKinyongia vanheygeni, the Poroto single-horned chameleon or Van Heygen's chameleon, is a species of chameleon, a lizard in the family Chamaeleonidae.Geographic rangeKinyongia vanheygeni is native to highland forests in the Rungwe and Poroto Mountains of southern Tanzania and northern Malawi.EtymologyKinyongia vanheygeni was named after Belgian herpetologist Emmanuel Van Heygen, who took the first pictures of it in the wild.