Guys, you know that most species of fish when eaten raw are actually dangerous, right? They contain thiaminase that dissolves vitamin B1 in the animal's system. Serious deficiency of vitamin B1 can result in neurological disorders. There are some species free of thiaminase like salmon, trout and bass for example, but the rest of fish should be seared, roasted or baked before being given to the cat or dog. High temperature destroys thiaminase.