Final answer:
Curare inhibits the release of acetylcholine, causing muscle paralysis and suffocation in animals.
Step-by-step explanation:
Curare, a poisonous drug used by hunters in the South American jungle, acts by inhibiting the release of the neurotransmitter acetylcholine. When the arrow with the curare-tipped arrow strikes an animal, the curare interferes with nerve impulses, preventing the release of acetylcholine. This leads to flaccid paralysis of muscles and ultimately causes quick suffocation as the respiratory system becomes paralyzed.