Puffer

It releases a hallucinogen that confuses and disorientates humans' decision making. It lulls the pleasure center of the human brain, as the chemical reactions encourage a surge of dopamine. This creature is highly territorial, and its secretions have been known to ward off most generic shamblers. Mutated shamblers are not as affected, but find it off-putting. Each boil secretes dripping acid when it desires, and its chemicals which hampers a person's immediate instinct to kill it. The longer you have been suspended in its aroma, at about 5 minutes, a person can expect to hesitate in urges to kill the Puffer for a full minute. The sooner it is dead, the better. Some have farmed Puffers to get high. The chemicals smell like marshmallows, interestingly enough. It is best to identify, locate, and kill it before three minutes, as that is when the human becomes weaker to react.