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Why is my puppy tired after his rabies vaccine? Is it normal?

Updated On September 23rd, 2025

Pet's info: Dog | Pembroke Welsh Corgi | Male | unneutered | 12 lbs

Hi, I took my 12 week puppy to get his rabies vaccine this afternoon, and he has been really low energy ever since. Is this normal?

2 Answers

Most Helpful Answer

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Answered By Angel Alvarado, LVT

Licensed Veterinary Technician

Published on January 10th, 2020

A bit of lethargy, fever or pain at the site of injection can be seen after any vaccine. It typically resolves within 12-24 hours. If not, recheck with your veterinarian. Symptoms that should be addressed by your veterinarian include extreme swelling, extreme lethargy, difficulty breathing or vomiting/diarrhea. These may indicate a vaccine reaction.

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    Answered By Dr. Melanie, BVSc MS

    Veterinarian

    Published on March 18th, 2020

    Thank you for contacting Petco Pet Education Center, formerly Petcoach with your question about Lucky. Yes, this can be normal. For some dogs, the shot can be painful and cause them to have low energy, not want to move, and a decrease in appetite. He should return to normal in 24-48 hours. If you see vomiting, diarrhea, hives, facial swelling, or difficulty breathing, take him into a vet immediately. I hope this helps!

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