We put PuffinCat outside for a bit even though it was dark, because she was getting feisty and I appreciate having all four of my limbs. I called her back in and she came in immediately (she doesn't go out much because the cat flap is too confusing...). She then proceeded to thunder round the house for several minutes and looked genuinely frightened a few times. I might be projecting human feelings onto her, but I looked at her and when she noticed she jumped. After that she sat on her cat tree and groomed herself for a bit. Is this normal? Was she actually scared or just a bit hyper? She seemed really jittery, could something outside have scared her?