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.
4 Answers
Most Helpful Answer
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.
1Pet Parents found this answer helpful
Related Answers from Veterinarians
-
Published on May 8th, 2018
Lethargy and inappetence are very concerning signs especially in a young puppy as they can lead to dehydration very quickly. I recommend you have Max examined by your veterinarian right away. These are very general and non-specific signs so it is difficult to make any suggestions as to what might be going on.
1Pet Parents found this answer helpful
-
Published on September 17th, 2018
Hello, sorry to hear about Guido. These are very vague and non-specific signs and are commonly seen in multiple scenarios. Most often, pups may have changes in their environment such as excessive heat which may make them more groggy but other times, pups may have a dietary indiscretion that could make them be lethargic. Both of these are often self limiting and not requiring your veterinarian to see them unless they develop persistent vomiting, diarrhea, more severe lethargy, or inappetence. More severe causes of this could include parasites, allergies, ingestion of foreign material, and infections with parasites. If these signs persist longer than 2-3 days, or if he develops vomiting, diarrhea, lethargy, or a decreased appetite then have him evaluated by a veterinarian. Hope this helps and best of luck.
1Pet Parents found this answer helpful
-
Published on June 10th, 2019
If your puppy is alert mentally, and is getting up and walking around/playing occasionally then I wouldn't classify this as extreme lethargy, so I wouldn't classify your description as a puppy that needs immediate veterinary attention, but we do usually see puppies being more playful so I would make an appointment at a vet's office for an examination once they are open. If the puppy becomes nonresponsive/unable to walk/raise its head then this would be extreme lethargy requiring urgent care.
1Pet Parents found this answer helpful
Is my pup lethargic? Not really eating for the last 6 hours, drank just a fair amount of water. I dont know if my dog has diarrhea but i have a picture of his stool. She would often wake up when she needs to take a poo/pee or sometimes wake up just
My puppy is lethargic. He still eats and drinks water, there's no diarrhea or vomiting but he doesn't want to move or hang out.
My puppy has had diarrhea for 24 hours, is lethargic and is having trouble walking on her front paw
hi, my dog started to walk slowly, she used to be very active and now she is just laying..she is only 7 months old, so i dont know why. when she is laying he doesnt even wanna move and when i call her she goes to me but it takes soo long..
Luna has been sick for more than a week now.Visited 2 vets several times but it's not helping.She's lethargic, has pale gums, gets eye gunk that keeps her from opening her eyes, pale & cold paws, sleeps all day & doesn't eat on her own. Doesn't vomit
My two year old female Siberian Husky is acting really odd. she’s being super lazy/tired, she isn’t playing, no tail wagging, she’s panting a lot, she barely ate a little bite of what we gave her. Please help me
Good evening! This afternoon my lab mix puppy (11 weeks) start to pee on herself and she’s tired all the time. No energy even for to eat. I don’t know what to do. This morning she was great! And I didn’t see her eating something. She doesn’t take all
What causes a dog to not want to eat hard dog food along with being weak and not wanting to move he eats find and drinks and gets spouts of energy what could this be
My 10 month old puppy is lethargic, does not want to drink water, seem sin pain, licks the top of her paws. Vet has given me antibiotics and meds for pain and GI but has not worked. They don't know what is wrong with her.
My dog hasn’t been eating well, she doesn’t want to do much anymore but sleep. She’s been like this for a week already, her tummy is pretty warm. She’s not throwing up and she doesn’t have diarrhea. What’s wrong with her?
Book an appointment with the pros – our expert vets are here to help.
