Introduction:
Territorial behavior is a common phenomenon observed in many animal species. It involves the defense of a particular area against intruders of the same species. However, there are certain situations where animals may not behave territorially. Let's discuss each option in detail:

A) When resources are very scarce in a territory:
In this situation, animals may not behave territorially because the limited resources cannot sustain a territory. When the availability of resources, such as food, water, or shelter, is insufficient to meet the needs of the individual or group, animals may resort to alternative strategies. They may either disperse in search of better resources or engage in cooperative behaviors, such as group foraging or sharing of limited resources, rather than defending a specific territory.

B) When resources are very abundant in a territory:
When resources are abundant, animals may not feel the need to defend a specific territory. If there is an excess of resources, individuals can easily satisfy their needs without the necessity of territorial defense. In such cases, animals may exhibit a more tolerant behavior, allowing others to access the resources without aggression or territorial disputes.

C) During its breeding season:
During the breeding season, many animals become territorial in order to defend their mating opportunities and ensure reproductive success. Territory defense helps in attracting mates and preventing intrusions from potential rivals. Therefore, it is more likely for animals to behave territorially during their breeding season.

D) During the non-breeding season:
During the non-breeding season, when the primary goal is not reproduction, animals may not exhibit territorial behavior. Without the need to defend mates or breeding territories, individuals may adopt a more relaxed or nomadic lifestyle. They may move freely in search of resources, without engaging in territorial disputes.

Conclusion:
In summary, animals may not behave territorially when resources are scarce, abundant, or during the non-breeding season. Territorial behavior is more likely to occur when resources are limited and need to be defended, or during the breeding season when reproductive success is at stake. Understanding the factors that influence territorial behavior provides insights into the ecological dynamics and social interactions of animal populations.