Not sure if you've read all the current media reports and interviews posted previously on this one thread full of great info, but he had a girlfriend when younger ( he and she were Jayme's age now or very close to it). He liked to frighten her by posing dead roadkill he'd found, then permanently preserved ( stuffed).
So, he was in some part of his residence at that time dealing with cleaning all the organic bloody matter out of opossums, raccoons, woodchucks, whatever he chose to " play with", including a dog... Not sure if dog was roadkill or otherwise decapitated, actually, as it's not listed as being roadkill.
She was frightened after he threw the dog's head on her or at her, broke up with him, and in retaliation, he slashed her mother's tires.
Did you see his HS senior class photo? 34 standing, happy pleasant= looking smiling seniors plus one adorable baby together as a group in a classroom, and seated at the very rear of the room, as far away as possible, apart from the group at a table slumped down, scowl on face and book opened on table, is Jake Patterson.
It's the most archetypical anti-social photo which could candidly have been taken of he and his classmates. He's been in his own isolated world for years. It's always really good to read the threads here. I've spent hours reading what I missed yesterday. I've gotten a lot of new info. We have such great sleuths
Definitely sounds similar to Jeffrey Dahmer, who also had a very active, twisted imagination and fantasy life. Guessing this guy is the same.