Decembersaurs

The Decembersaurs are a group of slightly confusing dinosaurs tasking with celebrating Christmas, Jurassic-style.
Veloci-wraptor hunts his prey and gift-wraps it.
Tree-Rex is a lumberjack and he's OK.
Merrydactyl is the guy who shows up late and drinks all your Lambrini, then falls asleep on your shed after eating the cat...