Yes but. In my experience (after asking) those are usually to remember past dogs or maybe they love dogs . These days tattoos are often on whim. People often want to be asked about tats, great convo starter. But I would keep it civil and dont even hint zoo. Maybe once you get to know her you can subtly evaluate..assuming she even wants to converse in that direction.
I met a girl, who unexpectedly was into me. Cute, tall..nice curves.. She loved dogs, had one she loved and walked/sat for people. Def a chill chick, smoked lotsa weed, up for anything, however the chemistry wasnt there for me at the time. But even though we hung a few times (and she was interested in me) , I never did bring up zoo.
I often pondered on it. I am sure she has at least been licked=). Anyway..we both still single so maybe in future. lol