what kind of MANE is poisonous?

Question

This is a riddle. It starts with the letter p and has 8 letters and ends with mane/main

Answer 1

Its a term of speech. e.g.

Edward Topsell in his 1607 History of 4-footed Beasts, included a bit translated from Conrad Gesner's 1551 Historiae animalium that was a description of a Gorgon as a [four-legged] animal with dragon's scales, pig's teeth, a poisonous mane, human hands, and lethal breath, that was a native of Africa and supposedly was bred in Libya. This description is possibly based on misunderstandings of Greek descriptions of Medusa's sisters.

Answer 2

Ptomaine.