Acting Like Animals: Surprised to See Me?

I know I'm certainly surprised to see you! I mean, I know we share the same apartment, but I wasn't expecting you to be home from work already! I was just taking a nap in my terrarium, and all of a sudden I woke up to see this finger in front of me and I had the craziest urge to climb it! And then BAM! There you are, right at the end of the finger! Does that mean this is your finger? That would make sense, I guess.