By definition, a Muffler man is a 20-30 foot tall fiberglass character, typically male, used to draw attention to a local business. Thge original mufflermen were built from 1963-1973 and according to Roadside America, no more are made since the original molds have long since been destroyed. They only made humans with the exception of a dinosaur for the Sinclair oil company. Large fiberglass animals are not mufflerman by definition, though most folks call them that anyway. Nowadays there are lots of fiberglass people and animals all about. If it was made after 1973 it’s not a true original mufflerman!
NY State Mufflerman