An animal’s behavior is influenced by many factors. Some of these factors include genetic predisposition, experience and learning, environment, and physiology.behavior can be inherited to some degree. maternal influences can affect personality and temperament. If puppies are separated from a fearful mother, the puppies are less likely to be fearful than if they are left with their mother. The effect of other puppies in the litter, the amount and type of human handling, and exposure to new objects and experiences all influence a dog’s behavior. The brain and its associated neurotransmitters also play a fundamental role in temperament and behavior. Abnormal levels of various hormones play a role in certain forms of aggression and fear. Understanding the nature of behavior problems is essential to developing a rational basis for their treatment.