SESKStuff Everyone Should Know
SESK: Stuff Everyone Should Know · sesk.info/dog-puppy-series-start

At about what age do a puppy's vaccine shots usually begin?

Around 6 to 8 weeks of age.

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  1. 6 to 8 weeks ✔
  2. 6 months
  3. 1 year

Why: Puppies start a series of shots at 6 to 8 weeks. Each dose comes every 3 to 4 weeks, because one shot is not enough for young puppies.

Huh, didn't know that: A dog older than 16 weeks starting from scratch needs only two doses, 3 to 4 weeks apart.

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References

Answer: 6 to 8 weeks. Puppies start a series of shots at 6 to 8 weeks. Each dose comes every 3 to 4 weeks, because one shot is not enough for young puppies.

  1. UC Davis, Vaccination Guidelines for Dogs and Cats healthtopics.vetmed.ucdavis.edu/health-topics/feline/vaccination-guidelines-dogs-and-cats
    one dose of vaccine containing modified live virus (MLV) CPV, CDV, and CAV-2 is recommended every 3-4 weeks from 6-8 weeks of age
    Checked 2026-10-11.
  2. UC Davis, Vaccination Guidelines for Dogs and Cats healthtopics.vetmed.ucdavis.edu/health-topics/feline/vaccination-guidelines-dogs-and-cats
    For dogs older than 16 weeks of age, two doses of vaccine containing modified live virus (MLV) CPV, CDV, and CAV-2 given 3-4 weeks apart are recommended
    Checked 2026-10-11.

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