Petco Text Logo
Petco Pet Logo

Why is my senior dog lethargic, not eating, vomiting, diarrhea?

Updated On September 23rd, 2025

Pet's info: Dog | Jack Russell Terrier | Female | spayed | 14 years old | 15 lbs

My 14 yr old jrt isnt hasnt eaten much for 2 weeks. She started with vomitting and has been passing mustard yellow, mostly liquid stools for over 2 weeks. Her weight has gone from 10kg to 7kg. She also seems lethargic. She has had blood tests last week which are normal. She is also on vetroyl for cushings the vet has reduced dosage from 70 ro 30 since we went back about the lack of appetite and stool problem. Vet says electorlyte reults are normal which doesnt indicate addisons.

1 Answer

Most Helpful Answer

Image profile

Answered By Dr. Leigh, DVM

Veterinarian

Published on January 31st, 2017

That is very concerning that she is not eating, vomiting, and losing weight. If blood work is normal than your vet could do x-rays and/or an abdominal ultrasound to look for abnormalities. Your vet could also do an ACTH stim test to make sure she is on the correct dose of vetoryl. Your vet could also treat with an anti-nausea medication called Cerenia and an antibiotic called Metronidazole to see if that helps with the vomiting and diarrha. Hope she feels better soon.

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