Kamadan

A kamadan is a feline predator that resembles a leopard with six snakes sprouting from its shoulders. Although it bears a passing resemblance to a displacer beast, the two creatures are unrelated (though some sages claim otherwise).
Kamadans typically hunt alone or in mated pairs. They can exhale clouds of sleep gas, which they typically do before entering melee combat. If a kamadan has both conscious and unconscious enemies within striking range, it tries to kill the conscious enemies first before finishing off any sleeping foes.

Loot. 

• 1 Kamadan Pelt (Acts as a blanket. Can be carefully crafted (leatherworker's tools) into a cloak that grants resistance to cold damage. In extreme heat, a creature rolls constitution saving throws to avoid exhaustion with disadvantage.)
• 2d4 Snake Skins (No immediate use. Can be crafted (leatherworker's tools) into a pouch or carefully crafted (leatherworker's tools) into a water skin.)
• 1 Kamadan Sleep Gland (As an action, can be squeezed to exude sleep gas in a 30-foot cone. Each creature in that area must succeed on a DC 12 Constitution saving throw or fall unconscious for 10 minutes. This effect ends for a creature if it takes damage or someone uses an action to wake it.)