It shows you love animals, girls love guys who like animals, it's practically fullproof!
There's possible knowledge behind your theory, but I really don't think that's how them things work.
Also, I think it's spelled foolproof, isn't it?
The only reason someone would play Zoo Tycoon is because they love animals (stereotypical girls like that), they love managing finances (shows you are a provider) or because they like feeding people to lions (not so good). Odds are in your favor they will think something positive about you.
Yeah, now I know you're just spouting nonsense.