Lynx

A lynx (/ˈlɪŋks/;2 plural lynx or lynxes3) is any of the four species within the Lynx genus of medium-sized wild cats. The name "lynx" originated in Middle English via Latin from the Greek word "λύγξ",2 derived from the Indo-European root "leuk-", meaning "light, brightness",4 in reference to the luminescence of its reflective eyes.4

Neither the caracal, sometimes called the desert lynx, nor the jungle cat, called the jungle lynx, is a member of the Lynx genus.

He is as wild as a Lynx