What is the term for an intense gaze that indicates stress or aggression in animals?

The term "hard stare" refers to an intense, unblinking gaze that an animal may direct at another animal or person, often signaling stress, aggression, or a challenge. This specific expression often indicates that an animal feels threatened or is preparing for a confrontation, making it a key behavior to recognize in the context of animal behavior and welfare. Understanding the significance of a hard stare is essential for caretakers and veterinarians, as it allows them to better interpret animal body language and respond appropriately to their needs and emotional states.

Other terms, such as "soft gaze," refer to a more relaxed and friendly facial expression, which is generally associated with calmness and trust. "Split gaze" might describe an animal looking in two different directions, indicating distraction or indecisiveness, rather than a clear communication of stress or aggression. "Distracted gaze" suggests that the animal's attention is not fully focused on one object or individual, again not indicating stress or aggression, but rather a lack of engagement or interest.