A forlarren will attack on sight with its fists, but also has the ability to heat metal once a day on contact. (Russ Nicholson, AD&D Fiend Folio, TSR, 1981) This is the illustration that accompanies the forlarren stats; I might prefer the more devious one on the book's title page.

Firenewts on giant striders patrol the lava flows.  (Alan Hunter, AD&D Fiend Folio, TSR, 1981)

Firenewts, or salamen, are distant, evil relatives of lizard men, favor hot, sometimes sulphurous locales, breathe fire, are themselves resistant to it, and and have dark, mottled skin, smooth and eel-like, but dry. They form large bands or tribes protected by druidic priests and elite warriors and are seldom encountered in small numbers. Marauding hunting parties delight in mayhem and torture (by fire), and firenewts above ground are often (33%) encountered on giant striders. The lair of the firenewt, meanwhile, is host to numerous young and eggs in incubation. From the AD&D Fiend Folio, TSR 1981