Many biologists grew up liking animals. That’s why they became biologists. Not me. I never had a particular interest in animals, never had pets, never brought in animals from outdoors. My interest in the local wildlife only emerged after I had been working as a (molecular and computational) biologist for some time. Walking to and from the lab, you start to notice things.
Imagine the following situation. You are at a party and chat with someone you’ve just met. You start talking about what you do and what you are interested in. You say something like “I like statistics, and especially how it applies to solving biological problems.” The person you are talking to smiles brightly and then says: “Fantastic! Have you tried braiding your hair?”