Petco Text Logo
Petco Pet Logo
  • Two Easy Ways to Start Earning Rewards!

    rewards header
    Become a member today!
    Members-only pricing and offers, personalized care notifications, Vital Care points back on every purchase and more!
    Petco Pay LogoBecome a credit card member today!

    Earn 2X Pals Rewards points at Petco
    when you use Petco Pay!

    APPLY NOW
    Learn More About Petco Pay Benefits

Why is my dog straining to poop, vomiting, and can't keep water down?

Updated on September 23rd, 2025

Pet's info: Dog | Mixed Breed Large (61lb +) | Female | spayed | 6 years and 11 months old | 100 lbs

My 7 year old female mastiff mix has been having trouble pooping (only a small amount in the last 20 hours). She has tried many times. She has not been able to keep water down since last night either. She still wants to eat a little food and of course dog biscuits. She keeps solids down.

1 Answer

Most Helpful Answer

Stephanie Echols, DVM

Answered By Stephanie Echols, DVM

Veterinarian

Published on September 2nd, 2017

It sounds like Ellie could have diarrhea and that's why she's straining. She could also be constipated but it's not common in dogs. Since she's also vomiting I recommend taking Ellie to the vet to find the cause. They can check for constipation or diarrhea and treat the cause. Good luck and kisses to Ellie!
Vote Icon1Pet Parents found this answer helpful

Smart Picks for Smart Questions

Have A Vet Question?

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

Share

Styled arrow button