Tuna can safely be fed to dogs. Feed only high quality fresh tuna or that canned in water. Make sure there is not a lot of added salt and consider the fact that mercury, which is hazardous to humans and dogs, is frequently found in tuna.
Tuna contains omega-3 fatty acids, which benefit the cardiovascular system, coat and joints. The fatty acids can help prevent irregular heart rhythms, reduce inflammation and improve the ratio of good (HDL) cholesterol to the bad (LDL) cholesterol.
Tuna is a good source of vitamin B6 and folic acid, which helps keep the arterial walls clear of harmful buildups of plaque.
Consult the dog’s veterinarian for a recommended feeding amount of tuna.