CARRION CRAWLER
“Carrion crawlers strongly resemble a cross between a giant green cutworm and a huge cephalopod. They are usually found only in subterranean areas. A carrion crawler moves quite rapidly on its multiple legs despite its bulk, and a wall or ceiling is as easily traveled as a floor, for each of the beast's feet are equipped with sharp claws which hold it fast. The head is equipped with 8 tentacles which flail at prey;”
Gary Gygax, Monster Manual