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My 3-month-old puppy bites. What about his shots, training, and diet?

Updated On September 23rd, 2025

Pet's info: Dog | Mastiff | Male | 2 months and 26 days old

Hi doctor My pet dog (mastiff) is about 3 months old. I want to know about his vaccination because nowadays he start biting human more...Becoming arrogant and irritated while we try to stop him for doing something ...Plz also suggest his trainings schedule and nutrition

1 Answer

Most Helpful Answer

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Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on February 27th, 2017

Tiger needs to get his vaccines as soon as possible. A puppy should first get them when they are 6-8 weeks old, and needs a total of three series of them spaced four weeks apart so they are fully vaccinated at 14-16 weeks of age. I recommend having Tiger seen by a vet as soon as possible to get his first series of vaccines. Because he is older when he's first having them done, he will only need a booster of them in four weeks, and then he will need to be revaccinated in a year. As for training, I would put him into a puppy preschool or work with a professional behavioral expert when he is vaccinated. That will teach him how to interact appropriately with humans and other animals, and you will learn basis commands for him. In terms of nutrition, he should be fed a puppy formulated food. I recommend Hills Science diet or Royal Canin. He should be fed three times a day (morning, noon, evening) until he is six months old, and then he should be fed twice a day. Feed him according to the instructions on the food label, and divide the daily recommended amount into three equal portions.

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