My 4-year-old male dog is suddenly aggressive. What should I do?

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My male dog is 4 yrs old and nowadays he is becoming aggressive. Whàt can i do? Pet's info: Dog | Great Dane | Male | 4 years and 2 months old

Jennifer Summerfield, DVM CPDT-KA · Accepted Answer

Hi there. It's unusual to see aggression issues suddenly start in a dog this age without any history of aggression, so I would be suspicious that Danny may have a medical problem causing this. He may be painful or uncomfortable for some reason, or may have a hormonal problem such as hypothyroidism or Cushing's disease causing him to be more irritable. I would recommend taking him to the vet for an exam and possibly lab work to see if an underlying cause can be found.

My 4-year-old male dog is suddenly aggressive. What should I do?

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