Our house is around 35 years old, we are the third owners, but only the second to occupy the home. For unknown reasons the second homeowners owned the home for 10 years, kept it well maintained but never stayed on (nor rented) the property. The original owners died in the home of natural causes, but I never felt like the home is haunted.
A small idea of the layout of the home for reference: the home is a split level. You walk up stairs to get to the front door, once you enter you can either go downstairs to the laundry, garage, my den and husband's man cave, or you can go upstairs to the main floor where the living room, kitchen and dining room are visible from stairs, then to the left of the stairs is a small hall for three bedrooms and bathroom. Only a few things has happened to us personally, and one noteworthy thing happened to a friend.
Within the first 6 months of living there, my husband was working on organizing the garage so he was in and out of the home. I had just gotten home from work while my husband was walking out of the garage. I, just walking into the door, see my husband pause at the garage entry and say "Calypso (our black cat) just ran in the garage, remind me so we can let her out later." I respond "Ok" and proceed up the stairs only to be greeted by Calypso, our other cat, and the dog. I go downstairs, told my husband, we searched the garage only to find nothing out of the ordinary. He was 100% positive it was our cat.
A month later I was just waking up, my husband was showering so I was laying in bed being as lazy as I could before work. I rolled over and heard clear as day in my ear in what sounded like an older male voice "Don't forget it!" Thinking it was my husband I respond "Forget what?" and roll over to face the bathroom door thinking he is in the bedroom, nope he was still showering.
So we have now lived there for 2 years and I personally have seen the black cat once since my husband saw it.
A friend of our stays at our house when we are on vacation. He complains about the lights flickering (it's an old house so I chock that off to needing new electrical), odd feelings and the animals will stare into the dark hallway at night (I keep my door closed at night with the animals in the room and personally never had an issue).
Though one time he said he was outside playing in our back yard/woods with the dog at night. There is a floodlight but it doesn't reach too far into the woods. Anyhow, he said he was playing with the pup, she brought him the ball, dropped it. Our friend told us that he felt uneasy just before the dog turned around and started defensively growling towards the woods. He said he hasn't heard that sound come from her before, he saw nothing in the woods, and personally she never defensive growls when my husband or I are around.
Who knows what was out in the woods? Paranormal or not our friend won't go out there at night anymore.