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To separate behavior from biology is a medical error. All behavior—from a dog’s compulsive tail chasing to a parrot’s feather plucking—is rooted in neurochemistry, endocrinology, and genetics.

Veterinary professionals must determine whether an animal’s unwanted behavior is rooted in a medical condition or a psychological issue. zoofilia hombres cojiendo yeguas 27 link

Acute onset of aggression in a normally gentle dog is a classic indicator of pain, often originating from dental disease, spinal issues, or hip dysplasia. To separate behavior from biology is a medical error