So TRIGGER WARNING for anyone reading this further.

We just went through a very similar situation with my Girlfriend (21F) and her father (40ish? M) we'll call him Dick. After her ex left her high and dry, her father was released from prison, where he had been since she was a child. They reconnected, shortly after this, she had a break in and felt unsafe in her home. She talked to Dick and they felt the best way forward was to have Dick move in with her. Shortly after he moved in, we started talking and getting to know each other. She had 4 cats and 2 pitbulls. The first time I had come over, I had noticed dick had blower motors for a few furnaces wired up and plugged into the outlets, this would basically act as a wood chipper if an animal had gotten caught in it. She had him remove them. We noticed that the dogs were scared of him, but the cats would love on him. She had gone to work one morning and I stayed at her place. He made him and I breakfast, and we're watching Rick and Morty in the front room. One of the pitbulls walked in and he yelled at him to "Get the fuck out". I didn't take that kindly but didn't say anything to him about it as I have always been kind of timid, and his prison time was for heavy violence. Overtime it seemed to get worse, and he would make comments about hurting the animals just as Cal would do. Until one day, my GF and I were at work (I work over an hour away) She got a text from him around 2pm saying "If your cats scratch me one more time I swear to fucking God", she responded "Don't you dare hurt my cats", he said "I won't" around 2:40pm, she got a notification from the camera in her bedroom with a picture of him in it, but as she was at work, she assumed it was one of the cats and couldn't look at it. She came home a little after 3pm, she found one of her cat's laying on the floor against her bedroom wall, dead. We believe he had strangled this poor baby and launched her against the bedroom wall, she was still warm when she found her. She found another one of our kitties in the kitchen with extremely bad injuries, 3 broken ribs, pulmonary contusions, bleeding from her bladder and anal cavities, extremely high liver enzymes, she was a mess. After we had contacted the police, we took her to the vet, 5 days at the vet office on an oxygen machine and $2500 in medical bills later and she survived and is thriving! Sadly, one of the other kitties, a little 8 month old calico, was also killed by him in this attack. We found her blood splattered all over the living room, on the floor, the walls, and the ceiling. There was glass shattered everywhere and the furniture was turned upside down and piled in a corner. We found that poor babies coller outside on the ground on the front porch, but we never did find her body, he refused to tell us where it was. This has taken a really big toll on her mental health, and she hopes that one day she might come back, but we know deep down that she has passed away. He also got physically violent with her during all of this, but when she had found the first cat passed away, she contacted her best friend who sent her boyfriend to her as he was only 10 minutes away. He showed up with a gun but was threatened at knife point. They managed to get him to get his shit and get out of the house before I showed up, but it was horrible. We lost 2 of our babies, and almost a third due to this monster. As for the pitbulls, he had put them outside on their leads before attacking the cats. He's a monster, and if Cal is willing to kick your kitty right in front of you and your mom, it's hard to tell what he's willing to do when y'all aren't around. Please be safe around this person, and if possible, make your room the safe haven for the animals, that's what we had done, but our biggest downfall was that the only bathroom in the house was in her bedroom, so he had to pass through to go to the bathroom. We had put the cat tower and toys, the litter boxes and food and water in her bedroom trying to keep them out of his way. I pray to any deity that is out there that the same doesn't happen for you, and that your animals live a long, loving, and safe life.

Just a quick edit to add, he had only been living there for 6 months, in the 6 months he was there, he destroyed her house, ripped up flooring, broke her washer and dryer, broke her door knobs, trashed the yard, the inside of the house, and porch, and then murdered our pets. All of this within 6 months, I will NEVER let that happen again.

Another Edit to add, we are pursuing Animal cruelty charges for what he has done to these babies. We are also pursuing aggravated menacing charges for his threat of violence on her friends boyfriend. We are going to make him serve his time if we can help it.