Loud noises can cause animals to startle, and anything out of the ordinary can startle and spook animals into uncommon and dangerous behaviors. Given these facts, what can cause animals to become dangerous among the following options:
- threatened
 - Befriending them
 - influenza
 - hyperthyroidism
 - Helping them
 - Loud noises
 - Happy thoughts
 - steroids


 

      Loud noises   