It depends if you mean A-Level subject, or 'get an A-Level at the end of the subject'. I do Biology, Chemistry, Physics - but as a fourth subject I do a Level 3 Extended Diploma in Animal Management, as I an't to go into veterinary. Obviously not all colleges offer this, but if yours does then go for it. There are no exams, only basic ( and I mean VERY basic ) assignments to do and you have several weeks, plus google to complete each one, and if you're stuck you can ask for help. It's less to do than my Geography GCSE - but it's worth an A-Level, and I get some really valuable work experience with a huge range of animals doing it ( my favourites are the Armadillos! ). That said, most of my group do it just because it can be fun and its an easy A ( I have about and 50% attendance to these lessons and I'm currently on Distinction grade, which is equivalent to A-Level grade A ).