Tuna is a type of fish that is high in mercury. Mercury is a heavy metal that can be toxic to dogs, even in small amounts. Symptoms of mercury poisoning in dogs can include:
* Loss of appetite
* Nausea
* Vomiting
* Diarrhea
* Excessive thirst
* Increased urination
* Muscle weakness
* Tremors
* Seizures
* Coma
In severe cases, mercury poisoning can be fatal.
In addition to mercury, tuna can also contain other harmful substances for dogs, such as bacteria and parasites. These can cause a variety of health problems, including:
* Food poisoning
* Stomach upset
* Intestinal problems
* Skin infections
* Ear infections
For these reasons, it is best to avoid feeding tuna to your dog. There are many other healthier and safer options available.
If you are concerned that your dog may have eaten tuna, contact your veterinarian immediately.