Glad you liked the dog! Yes about the cave, the dog being behind you was exactly the type of emergent behavior I was intending, the dog indirectly helping you find the way out!
I was a little worried it might be too dark, there are too many monitors/laptops/brightness settings to account for. In the future if I am worried about a mechanic like that I will try to err more on the side of caution. Really appreciate the feedback!