Not seen, exactly.
When I was about 22, I stayed the night with my mom. However, she didn’t have an extra bed, so we put a bunch of blankets on the floor.
I had been asleep for a bit, and I felt footsteps coming up besonders me on the makeshift cot. She had a dog, so I didn’t think much about it. But then there was a pressure on my pillow, beside my head.
Of course that jarred me up. The dog wasn’t there, but there were distinct footprints on the blankets, and a butt print on my pillow.
Of course it kinda shocked me, so I stared at it for a minute. It was as if whatever was there was still on my pillow. After a few seconds, the butt got up and the print was gone.
Freaked me out.