Answer:
No. Animals kept in captivity can be able to still mate with another. It might change their approach on humans though.
Explanation:
Kidnapping, theft, murder, carjacking, car problems, poisoned food, accidental food poisoning, heart attack, time traveling, being attacked by a monster, a pregnant woman giving birth, injury, anything getting on fire (house, car, restaurant, etc.), someone getting scared if they go to the movies, the movies characters coming alive if they go to a movie, bomb, bio weapon released at their location, receiving special powers, tornado, flooding, tsunami, thunderstorm, hurricane, they could be living in space, or one of them could be a secret monster.
It is a good place to play sports