You pull yourself through the small tunnel and find yourself in a nicely lit, cozy room.

The lights are dim but you can see furniture arranged as if you entered someone's living room. It smells like fresh cut grass, Maybe you're closer to finally getting outside? You can hear the sound of water running coming from a small opening in the wall to your right, where a window should be. Instead it's a tunnel with no end in sight, just the echoing sound of water that's makes you realize you're thirsty.

Suddenly the sound of a dog barking behind you startles you back into reality. You look closely and there's a tiny dog in a kennel against the wall next to the couch. The dog suddenly disappears and you realize it's not a kennel, but the entrance to another tunnel. The door to the kennel is latched but not locked and you could easily fit through the door.

What do you do next?

Follow the tiny dog
Go get yourself a drink, you are thirsty after all