Petco Text Logo
Petco Pet Logo

My dog ate a sub sandwich with onions and guac. Will he be okay?

Updated On September 23rd, 2025

Pet's info: Dog | American Pit Bull Terrier | Male | neutered | 40 lbs

My dog ate a 8” sub sandwich. It had roast beef, turkey, onions, mustard, guac, and cheese on it. He ate it about 20 mins ago and he appears completely fine. I just want to make sure he will be okay.

1 Answer

Most Helpful Answer

Image profile

Answered By Jennifer Summerfield, DVM CPDT-KA

Veterinarian, Certified Dog Trainer

Published on May 25th, 2020

Hi there. The only ingredient you've listed here that can potentially be toxic to dogs is onion - and for a 40 pound dog, he would need to eat quite a bit to cause any serious problems. I wouldn't expect the amount that would be on a small sub sandwich as a topping to be enough to be a major issue. It's possible that you may see some mild GI upset (vomiting or diarrhea) over the next 24 hours, especially if Bear isn't used to eating human food like this. But I would not expect to see any serious problems.

Vote icon

6Pet Parents found this answer helpful

image
Have A Vet Question?

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

Sponsored