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Why is my puppy lethargic with a dry nose after changing food?

Updated on September 23rd, 2025

Pet's info: Dog | Mixed Breed | Female | 3 months and 22 days old | 20 lbs

Hi My names Louis, I'm writing because my 17 week puppy that's normally hyper, is very lethargic today with a dry nose we changed her food today to simply nourish puppy food from Purina puppy chow. She is really a hyper pup and she didn't even act her self when I came home

1 Answer

Most Helpful Answer

Emily Luisana DVM

Answered By Emily Luisana DVM

Veterinarian

Published on August 27th, 2017

I am sorry to hear this! Typically a sensitivity to a food change would have symptoms like an upset stomach such as diarrhea so if it is mainly lethargy it may or may not be related.... Anytime a puppy of that age is acting lethargic for longer than a day or two warrants a check up. If it has only been a few hours, I would try to get her to do some of her normal activities like playing or walking to see if she perks up. If she still seems to feel dumpy you may want to take her in to be safe! I hope this helps and that she feels herself again soon!
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