Aggression to other pets can occur when a new pet is introduced to the family, as a younger dog matures or as an older dog becomes weaker or less assertive. Increased aggression toward unfamiliar people and animals can arise from your dog's increasing anxiety and sensitivity as he ages.
Why is my dog getting more aggressive as he gets older?
One of the reasons a dog can get aggressive is due to illness, injury, or confusion, regardless of their age. As a dog ages, it's common to have some health concerns. Something like dental pain, arthritis, or vision and hearing loss can trigger aggression in a senior dog.
Why is my dog becoming more aggressive?
1 Your suddenly aggressive dog may have an injury or an illness that's causing major discomfort and stress. Some possible causes of pain include arthritis, bone fractures, internal injuries, various tumors, and lacerations. Other illnesses may affect your dog's brain, leading to seemingly unreasonable aggression.
What age is a dog most aggressive?
According to the data collected, gonadectomized dogs between the ages of 7 and 12 months were more likely to be aggressive to strangers. Furthermore, gonadectomized dogs of all ages do not display violent behavior to familiar people or strangers.
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