: Behavior is often the first visible sign of an animal's internal health state. Abnormal behaviors, such as stereotypies (repetitive behaviors like self-biting), can indicate underlying neurological or physiological issues.
When an animal is terrified (raised hackles, tucked tail, dilated pupils), their body is flooded with stress hormones. This can: wwwzoophiliatv sex animal an aerogauge christie g link
Why is My Cat Staring at the Wall? (And Other Mysteries Solved by Vet Science) : Behavior is often the first visible sign