Christopher
After Jacob and the woman who was with him left, I went back to my computer and played some games. I hope he's able to find out who killed Wellington based on the visual evidence not some crazy theory the woman proposed.
About an hour later, the phone rang, and it was Jacob. He told me that the print on Dad's coffee mug matched the print he found on the garden fork, thus proving once and for all that the killer was Dad. He said he would e-mail the photos, but I don't know forensics the way he does so it wouldn't make sense how he was able to make a match.
After the conversation, I went up to my room and saw an e-mail from Jacob. He had sent me the photos and explained the ways in which the prints matched in such detail that I had no doubt who killed Wellington. I hope the police believe Jacob's information and punish Dad because you're not supposed to kill animals. It's against the rules.