Final answer:
Barking is an example of normal behavior that can be problematic when it is excessive or occurs at inappropriate times, causing disturbances. This is particularly relevant for dogs in residential settings, where their barking may disrupt the peace of the community.
Step-by-step explanation:
An example of normal behavior that is problematic can vary based on context, but considering household pets like dogs, barking is a typical example. Although a normal means of communication, excessive or inappropriate barking can be seen as problematic, especially in residential areas where it can cause disturbances. This behavior, while natural, can be shaped by learning and the environment, much like a dog learning to avoid a sofa after being scolded. In addition to barking, a dog exhibiting restlessness and aggression could also indicate a problem, such as illness or neurological disease.
It's important to remember that while an animal's behavior is part of its nature, there are situations where these behaviors can become disruptive or problematic to others. It's part of an owner's responsibility to train and manage their pets' behaviors to ensure they are well-adjusted and do not cause issues in their environment.