I wouldnt give corned beef to dogs too. Too much preservatives. And the sait content will affect the kidneys.
Tuna in water is better. Just drain and rinse to lessen the salt.
Some people feed their dogs sardines in tomato sauce. I dont know if its ok. I always forget to ask my vet.
I agree with you sis. Meat alone has taste na, kaya no need to put seasonings. Even if its a very small amount, salt will accumulate sa kidneys nila specially sa mga small breeds mas mabilis.
If you want it more tasteful, i suggest put fresh(celery, green/red bell pepper, mango, blueberry, strawberry), Boiled(carrots, kamote, squash, potato) cuts/mashed.
Have a 2 1/2 year old female Shih tzu, sobrang arte kumain, ayaw niya pagpaulit ulit ng food.
So i bought meat like, chicken, liver,pork, beef 1/4kilo each, then i cut it into small chunks and make it like a meat ball para madali ma-thaw. 1 meatball every meal, i'll boil it then if may veggie like squash isasama ko na sya while paluto na
[textspeak!] meat until soft na
[textspeak!] veggie then i'll mix it with rice(better kung brown rice kasi healthier) then some of her kibble. Pwede rin fish like tuna/salmon (fillet)

Pag tinatamad ako, i put 1/8 part of cesar/canned dogfood to her kibble w/ rice, then microwave.
If di nya pinansin
[textspeak!] food na ginawa ko, i'll put it in the ref. Next meal na nlang, then ill give kibbles only. If di parin, i'll wait nlang for her to ask for food, kasi malamang busog parin sya sa kinain nya last meal. she'll get my attention then she'll bark at the microwave. It means gutom na gutom na sya. Pag tapos na sya kumain, she'll inform me too! cause she gets treat after that like fruit or doggie biscuit, ngayon like nya
[textspeak!] sample pack ng acana, so instead na doggie biscuit ang bigay ko, dog kibbles parin

Dati kasi i always throw left over kibbles kasi di niya inuubos, tas hihingi sya ng food sa mom ko. kaya nanghihinayang ako

. ngayon palaging simot ang food nya and sometimes hihingi pa
May times na di siya kakain for the whole day, it's normal lang. Dogs do that to detoxify. But if its more than a day na eh call the vet.