Competition may lead to aggressive behaviors or displays of aggression, and social aggression is characterized by a dog that demonstrates a deep grumbling bark. Given these facts, what can lead to a dog demonstrating a deep grumbling bark among the following options:
- sensory neurons
 - reduced heat
 - competition
 - Decibels
 - friction
 - Damaged hearing
 - matter vibrating
 - adding heat


 

   competition      