Scary story but funny ending

A little long, but what happened was pretty funny in the end, so I thought I'd share it with you guys.

I was busy bathing my son in the sink when my mom decided to walk outside for a quick smoke. It's 9:30pm so very dark out, and this neighborhood isn't the best anymore. Well a few minutes after my mom comes back in the house, we hear a huge thud at the door. The dog starts growling and barking like crazy. Mom decides to look outside, doesn't see anything. She starts to walk away, and we hear another thud. At this point the cats start looking nervous. She goes to the door and THE DOORKNOB STARTS TO RATTLE

Well guys, she looks out again and still nothing is there. As she's looking out, the doorknob starts rattling even harder. She's screaming, the dog is going even more crazy now and cats are running from the room, and so is mom.

Well I tell my mom to run to the safe and get the gun. She tries but can't get the code entered correctly because she's so scared. In the meantime I'm standing at the sink with my son watching this doorknob continue to constantly rattle back and forth.. it's getting worse and I'm freaking too at this point. I tell her to come stay with my son and I'd get the gun.

I successfully get the gun and run to that door, yelling if someone is out there they are going to die. (Also I just had to drop the gun as I'm running at the door 🤦‍♀️). The doorknob still rattled like crazy.. I look out the window of the door and see something black, like the door was being ripped apart. At this point I'm convinced it's a demon, I mean we're seeing and hearing all of this stuff happening, yet not seeing anyone outside, and I can't handle this anymore (I've read way too many stories like this on the internet)..

I run and get my dad up, tell him what's going on, hand him the gun and he jumps up. I'm pushing him along telling him to hurry, my mom screaming that the rattling is even more intense and my son completely oblivious to everything just having fun in the bath.

I'm running behind my dad as he goes to the door. He unlocks the door and opens it... guess what flies out into the room? A cat. One of our cats. My dad jumps back, and I jump and scream. When I realized it was a cat, me and my mom started laughing. My dad thought we were messing with him at first, but I honestly thought we were all going to die. Apparently the cat had gotten trapped in between the wooden door and the screen door when my mom came back inside...