Petco Text Logo
Petco Pet Logo

My puppy is recovering but still lethargic. What signs to watch?

Updated On September 23rd, 2025

Pet's info: Dog | Goldendoodle | Male | unneutered | 4 months and 24 days old | 36 lbs

Yesterday my puppy experienced sudden vomiting, lethargy, diarrhea, and no appetite. Took him to the ER and they gave him fluids and told us to monitor him. Today he is still low energy and sleeping a lot. He has eaten his breakfast and no vomiting or diarrhea. Are there any signs of concern I should look for? He is still not himself and doesn’t have the same appetite as usual. No stomach pains.

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Melanie, BVSc MS

Veterinarian

Published on March 20th, 2019

You did absolutely the right thing by taking Cosmo into the ER vet. It's good that he's eating his breakfast, and has had no vomiting or diarrhea. I would expect he would be lethargic, as he sounded quite sick, and it will take a couple of days for him to return to normal. If he starts vomiting again, had diarrhea again, or loses his appetite, then I would take him back into a vet right away. I hope this helps!

Vote icon

1Pet Parents found this answer helpful

image
Have A Vet Question?

Book an appointment with the pros – our expert vets are here to help.

Sponsored