I want to try giving Sadie some Sardines for the health benefits I've heard that they provide. We have some sardines in olive oil, do you guys think that would be alright? The ingredients are: brisling sardines, olive oil, salt. I was a little worried that it may be too much fat with the olive oil. Also, how much should I put in and how often? She weigh's 40lbs now. Thanks for the help!