Health Mimic

The Health Mimic is a very dangerous enemy because of what form it takes. Any player low on health who sees a Medkit in a level may feel relieved, but be wary as it could be your downfall. There's a 1/51 chance after the Sewers area that a Medkit becomes a Health Mimic. Once a Health Mimic is killed, it will drop two mini pickups (Mini Ammo Chests and/or Mini Medkits) and 15 Rads.

There are a few ways to find out whether a chest is a Mimic or not:
 * It won't have the "shine" effect that regular chests have,
 * It will play an animation gnashing its teeth every once in a while.
 * It makes a high pitched giggling/chirping sound that can be heard if your character is close enough,
 * It also does the attack animation when it's touching another enemy,
 * In the end the easiest way to know whether your chest is real or not in the heat of battle is to just shoot it.