 SCP-111 is an apparently artificial species of invertebrate vaguely resembling snails. SCP-111 specimens differ from ordinary snails in that they have a warm-blooded metabolism, complex eyes, small horns consisting of cartilage-ridged tentacles, apparently increased intelligence in a complex vertebrate type jaw structure. Most abnormally, SCP-111 specimens possess small hollow sacs below their lower jaws containing methane from digestive byproducts. A series of data expunged along the inside of the trachea serves as a lighter, igniting stored methane as the specimen exhales, blowing a small jet of flame from its mouth. Said fire-breathing generally occurs in events of stress or anger.