Why is my 11-month Mastador puppy so aggressive and attacking?

Question

Caleb is my mastador and he is almost 11 months old. He is very sweet when sleepy, but when he’s not, he is a terror. We exercise him every minute of our day and if we are not outside, maybe rain, he ATTACKS. Like bad. I’m 11 and study dogs and dog training. I go to shelters all the time, but still, am not able to get Caleb to behave. Any advice? Thanks, -Sophie. Pet's info: Dog | Mixed Breed Large (61lb +) | Male | neutered | 10 months and 15 days old | 80 lbs

Jessica Keay, DVM · Accepted Answer

I am very sorry to hear about your problems with Caleb. I would recommend discussing his problems with his regular veterinarian to determine if he is having hyper/playful behavior or true aggression. If he is exhibiting true aggression at this young age he needs to see a veterinary behaviorist ASAP because he is going to be a large dog and could be very dangerous. Your vet can guide you as far as where to find the veterinary behaviorist or if there is a special dog trainer in your area that may be helpful. Best of luck to you and Caleb.

Why is my 11-month Mastador puppy so aggressive and attacking?

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