* Skunks: Skunks are famous for their foul-smelling spray, which they use to deter predators and defend themselves. The spray is a mixture of sulfur-containing compounds that is incredibly pungent and can linger for days.
* Binturong: This nocturnal mammal, also known as the "bearcat," has a distinct odor that has been described as smelling like popcorn or buttered popcorn. While not technically a weapon, the smell serves as a form of communication and territorial marking.
* Bombardier beetle: These beetles have a unique defense mechanism. They mix two chemicals in a special chamber in their abdomen, creating a hot, caustic spray that can be aimed at attackers. This spray is not only hot, but also extremely smelly, and can deter predators.
* Sea hare: While not technically a weapon, some sea hares release a purple ink that is both a visual distraction and a foul-smelling deterrent, making them unappetizing to potential predators.
* Mongoose: While not known for a specific odor as a weapon, mongooses are known to spray a foul-smelling musk when threatened, which can disorient predators.
It's important to note that many animals, like snakes, use odor as a form of communication and defense, but not necessarily as a direct weapon.