My mom lives in Southern California in a house that is about 50 years old. Over the years, we have experienced many phenomena there. This is one example, that occurred sometime in 1996:
I was working out of state and would call my mom about once a week. On this occasion I called and asked, "What's new?""I have a cat," she said. This was kind of strange because my mom is definitely not a cat person, but she explained that a friend was moving to another country and begged my mom to take her cat. His name was Morris and he was a tabby.
One or two weeks later, I called again. "What's new?" I asked.
She said, "I don't have a cat anymore." She had given the cat to a friend who really loves them. About two weeks after that, I was visiting her. My brothers, their wives, and kids, and I had gotten together to celebrate someone's birthday.
At one point, I turned to my mom and said, "I thought you had given the cat away."
"I did," she said.
"Why?" I explained that I thought I had seen a cat run behind the sofa. We shrugged it off.
The following day I was going into the dining room when again I thought I saw a cat jump off a chair and hide under the table. I asked my mom, "Are you sure you don't have a cat?" We looked everywhere, but couldn't find anything.
I left that day, and the next time I called my mom, she told me, "I saw your cat!" She explained that she saw a cat run from the living room to the dining room, the same general area where I had seen it. I asked her to describe it. "Black with white gloves and a white breast," she said. It was the same as the one I had seen.
After that, lots of people saw it: friends who came to visit, the mailman, a student who wanted to rent a room, my nephew. We never told anyone about it. They would say, "Oh, you have a cat," and my mom would say something like, "Well, it comes and goes."
After about two years of this, I gave my mom a puppy for Christmas. We never saw the cat after that, but I have frequently wondered about it. We have had too many experiences to not believe in ghosts, but I don't understand why a ghost cat would adopt us in that way.