Leopard's bane is a type of plant with bright yellow flowers and hairy leaves that has been used in traditional medicine for centuries. However, there are several other names for this plant, including arnica, mountain tobacco, and wolf's bane. Arnica is perhaps the most commonly used name, thanks to its popularity in homeopathy and herbal remedies. Mountain tobacco is another term used in some areas, while wolf's bane is more commonly used in Europe. Regardless of the name, Leopard's bane or its synonyms are known for their medicinal properties and are used to soothe bruises, reduce inflammation, and alleviate pain.