GHOST CAT - The ghost cat was seen during the 1980s and 1990s by several visitors of the information center. People appeared to step over something. Staffers asked the people what they were stepping over and they said it was a white cat! However, there were no cats in the room.
GHOST DOG - The phantom dog was seen at the King's staircase during the 1990s. It appears to have been heard several times. What's weird is that dogs were banned from the palace by Queen Victoria for the most part. There were exceptions, though- lap dogs... although some were pretty large.