Nightstalker Tail

Nightstalker tail is a consumable item in Fallout: New Vegas. They are occasionally found on dead night stalkers.

Characteristics
The severed tail of a night stalker, rattle and all. The tail provides +1 Hit Point for 5 seconds at a cost of 2 rads. The tail has a rather high caps to weight ratio, so it may be a better option to sell the tail rather than consume it.