My doggo freaked out last night when she heard a frog for the first time. I gar-un-tee she would be up and running around like crazy if she heard our house creak and crack like that.
I bit the heck out of the inside of my mouth and when my dog ran in the room, the first thing she did when she came back from her walk with my husband was to jump up on me and push her nose into the spot on my cheek right where I had bitten the inside. She knew.
Well, that is entirely possible :)