My vet advised Omega 3 supplements for my dogs’ cardiac health, and I’ve been using whole canned sardines (packed in water, no salt). One sardine is the right daily dose for a 20 lb dog, according to several websites I used for research (a 3.5 oz can has 2 sardines). The trick is finding no-salt sardines! My local groceries have about 10 brands of sardines, but only one of them is water packed with no added salt. I think mackerel or salmon would also work– but all of those sold near me have salt.
