So, today is a sad day. Here’s what Mark wrote on himynameismark.com

For the past month, a possum has been living in our friend Haven’s backyard. You may know Haven from the blink-182 documentary he has been filming for the past year or so. Anyway, this possum moved into Haven’s yard and he named him Treehorn. Every night or so, he’d send me a photo of our new friend. Then a couple of days ago Treehorn started to seem sick and lethargic. Today our little buddy passed into a better place. We are very sad to see him go. Yeah he was just a possum living LA, but he was cool marmot and a sort-of mascot to the blink-182 documentary. Farewell, little friend. Here he is a few days ago…