I have a male Siamese that runs around after using the liter box. If he doesn't run around he will stand in the hallway and make the scariest noises.
I watched him one time and it looks like he sees something on the wall or ceiling and then runs away. It's very funny, but I wonder why he does it.
It seems that it is part of the breed. Does anyone know why? He also loves to eat paper, especially envelopes (including the glue part), coupons, cash register receipts, magazines, etc. But his favorite thing are photographs.
He also finds socks and carries brings them to us.