Is cat fish oil safe? How much and how often should I give it?

Over supplementation of fish oil can certainly cause diarrhea. And some animals are sensitive to it even in small doses, so I always recommend starting with a low dose then working up. For cats, I would recommend a liquid pump in order to make that process easier. We have found that even though we are not exactly sure of the "correct" ratio of Omega 3 to Omega 6 fatty acids that since Omega 3 fatty acids are anti-inflammatory and Omega 6 fatty acids tend to be pro-inflammatory, that we prefer that ratio to be higher than we used to think. Omega 3 fatty acids work over time, so while daily supplementation is ideal, a few times a week is certainly better than nothing. So, I normally recommend a cat specific liquid in a pump and start with 1/2 the recommended dose for a few days to make sure there isn't any soft stool, then increase to the recommended dose daily (if possible).
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