A guivre (also known as a Wyrmor vouivre) is a mythical creature similar to a dragon. In legend, they were portrayed as serpentine creatures who possessed venomous breath and prowled the countryside of Medieval France. The words "guivre" and "givre" are spelling variations of the more common word "vouivre". Vouivre, in Franc-Comtois, is the equivalent of the old French word "guivre." All these forms are derived ultimately from Latin vīpera, as is English viper.

The guivre's have both front and hind legs, wings that are spiked along the outer edge, short necks that end in a boxed shaped head with short snout, ranging from 5 to 10 feet in height and 12 to 48 feet long. Locally in France, it was known as an extremely aggressive creature that would sometimes attack without being provoked. They were afraid of naked humans, and when saw them, blushed and looked away. They burrow in the ground and use their claws to dig and the spikes on their wings to move through the ground. Their main source of food is any underground creature or easily caught land animal.