Take them up on their offer, seeing that the zoo is closed for the day. The twins smile at you and take you by the hands as they walk you to a part of the zoo you’ve never seen before. You see what looks like an inconspicuous fountain in the middle of a walkway. One of the hippos steps into the fountain and touches where the water comes out as the basin suddenly sinks into the ground, leaving a hole, where the fountain was. “You probably can’t take the water like we can, if you press on the wall, there’s a corridor you can take that gets you to the same place.” she said, shortly before descending down basin elevator. You press on the wall and feel an odd groove in it. Feeling the groove further, you outline a hidden button that is basically invisible. You press it and the wall opens up, revealing a corridor just as the hippo said. You use your newfound bunny abilities to quickly sprint down the hall as the wall closes behind you.
You are not prepared for what you find next.
Passing through the corridor, you find all types of anthros wandering around this supposed nonexistent section of the zoo. All of them conversing with each other, playing, laughing, drinking, just being generally pleasant looking creatures. The sisters come back to meet you as they show off the area, saying in unison, “Welcome to the Underground Zoo, the home of the wild animals and their friends.” The atmosphere feels like an urban city, but all anthros instead of people. You stand in awe as the sisters drag you around showing you sight after sight. One thing that stand out to you is that each animal carries a scent, some pleasant, most not, but all of them carry some kind of scent. Some choose to go naked while others (like the sisters) have on very limited clothing that only suffices to cover their chest and hips. You take it that the hippos consider you their plus one (or “friend”) as it seems there are zoo animals paired with non-zoo animals. “So, where do you wanna go first?”