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My 8-month-old puppy is lethargic for days but still eating. Why?

Updated On September 23rd, 2025

Pet's info: Dog | Giant Schnauzer | Female | spayed | 65 lbs

My 8 month old dog who is usually very active has been lethargic for the past 2 days. She still eats and drink and walk but everything is done slower.

1 Answer

Most Helpful Answer

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Answered By Dr. Massimo Orioles, DVM, Cert AVP, MRCVS

Veterinarian

Published on December 19th, 2016

From the sign you are describing it is quite difficult to determine the underlying problem. General signs of lethargy could be commonly due to high temperature which may be related to an infection. In puppies gastrointestinal and urinary tract infections are by far the most common type of infections. If the signs do not resolve in the next 24hours or if Luna is showing any inappetence, more evident lethargy or any other signs (vomiting and diarrhoea for example) I would strongly advice a veterinary check up.

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