Fish is an integral part of the diet for many people feeding dogs and cats. At my own house, I feed several dogs and cats a raw diet. Over the years my breeds have included borzoi, great danes, toy poodles, boxer, but my specialty breed is Portuguese Water Dogs. Fish are an excellent whole food.
Actuarial science, math, statistics, economics, business and finance degrees are all good training for an actuarial career. However, actuaries come from a variety of educational backgrounds. Actuaries may have majors in areas such as operations research, physics, engineering, and even fine arts.
Your best bet is to major in actuarial science. It will directly lead you to pass the exams and it will give you the best job opportunities. Only few schools have the major. A good school that has it is Penn State's Smeal Business School.