Sam

Sam is the werewolf family's dog. He survived the werewolf attack.

Biography
During one full moon, while the family transformed and were out hunting, Sam remained at the cottage. When Wells' squad and Megan arrive at the cottage in search of shelter, Sam is instantly befriended by Cooper.

Sam avoids most of the fighting as the werewolves besiege the cottage. Eventually, at least three werewolves break into the cottage. One confronts Sam after the former kills Spoon, but does not attack.

Sam survives the destruction of the cottage by escaping into the cellar with Cooper and Ryan. When Ryan, who is now a werewolf, tries to kill Cooper, Sam attacks Ryan, distracting the latter long enough for Cooper to kill him.

Sam and Cooper leave the rubble that remains of the cottage and head of into the woods, side-by-side.