In the wild, animals deal with ecological challenges in order to acquire the resources, such as food and shelter, that they require to survive. These challenges arise from interactions with other animals, or through changes to their environment that require the individuals to exercise their cognitive ability and to improve their behavioral strategies. Therefore, these challenges act as an important problem-solving element in the animals' day-to-day lives, and in-turn, increases their overall fitness. Lack of cognitive stimulation can cause boredom and frustration which can potentially lead to abnormal behaviors.