Is it bad if a puppy eats heavily seasoned fish?

Yes, it is bad if a puppy eats heavily seasoned fish. Puppies have a sensitive digestive system and can easily be upset by foods that are too rich or spicy. Heavy seasoning, such as salt, garlic, and onion, can cause the puppy to vomit or have diarrhea. Additionally, certain fish, such as tuna, can contain high levels of mercury, which can be toxic to puppies. If you think your puppy has eaten heavily seasoned fish, contact your veterinarian immediately.