Continuity mistake: When the two station reporters are showing Eddie's drawings to George Waggner, the drawings change position on the desk between shots. (00:16:00)
Continuity mistake: When Karen finds Terry's corpse, there is nothing visible on her, and half her body is shown. In the next shot a white blanket is suddenly on her body, all the way up to her neck. (01:03:15)
Continuity mistake: After Karen has a nightmare on the couch, Bill comes in and comforts her. Karen's grip on Bill's shoulders changes between shots. The position of her head changes too. (00:13:30)
Continuity mistake: When Karen enters Dr. Waggners office, the phone on the desk is right by the edge, closer to the door. After Karen finda Terry's corpse, the phone is now on the other edge of the desk. (01:03:00)
Continuity mistake: When Karen enters Dr. Waggner's office, she leaves the door halfway open. After finding Terry's corpse, the door is now almost shut. (01:03:00)
Continuity mistake: When Terry jumps out of the window, she rolls into a log, and moves the hatchet from an angle so it falls down. In the next shot it's sticking up at an angle again. (00:55:30)
Continuity mistake: When Terry is on the beach, she stops the dictaphone, and begins to write. Between shots the dictaphone changes position on the tape player. (00:48:35)
Continuity mistake: When the female reporter is bent down at the table covered in items (then scared by the dog), the items on the table shift positions between shots. (00:14:55)
Continuity mistake: When Karen and Bill are in bed, and Karen has a nightmarish flashback, she pulls back from Bill. Between shots, the position of her hands on his arm, and the bedsheets wrapped around them changes. (00:16:30)
Continuity mistake: When werewolf Eddie takes the file out of Terry's hand, he holds it at the top. In the next shot he is holding it at the side. (01:00:50)
Continuity mistake: When Terry approaches the cabin, after hearing voices, as she walks towards the door it is open about a quarter of the way. In the next shot it's shut. (00:52:55)
Continuity mistake: When Terry begins to write notes on the beach, she has nothing in her left hand. In the next shot shes holding sheets of paper, with no indication of her picking them up. (00:48:35)
Continuity mistake: When Karen is in George Waggner's office, being recommended to visit the Colony, the large potted tree/plant behind her keeps on moving, ie. it's branches keep moving, and it shifts across. (00:19:30)
Continuity mistake: When Eddie is transforming into a wolf in front of Karen his left hand turns grey and grows hair down to the knuckles. Then in the shot of his arm muscles expanding, his left hand has a normal skin color and hair only down to his wrist. Apparently, while editing no one checked to see how his hand was already established. (02:09:55)
Continuity mistake: After being attacked by the werewolf, Terry runs into Dr. Waggner's office. Between shots, as she goes over to the table, to the telephone, the phone changes the direction it faces. (00:57:30)
Continuity mistake: In the control booth, the amount of black handkerchief that sticks out of Fred Francis' front jacket pocket, keeps on differing between several shots. (00:09:40)
Continuity mistake: When the werewolf attacks Terry, it pushes things at her; note the pedestal which flies into her - the white sheet falls off of it. In the very next shot the sheet is back on the pedestal again. (01:01:00)
Continuity mistake: When the 6 News begins it's broadcast, Karen is seen passing the camera and walking over to the news desk. It cuts, then goes back, and Karen now walks past and towards the desk a second time. (00:17:35)
Continuity mistake: Terry drops the phone on the floor, so that it hangs from the desk. The telephone cable is long enough to allow it to reach the file cabinet without being too tensed. If she dropped the receiver there, the cable would not retract so much as to leave it hanging from the desk. (01:00:45)
Continuity mistake: When the female reporter is scared by the dog, she whacks the dog with her book, which then flies out of the window. In the very next shot the book is suddenly back on the table. (00:14:55)
Answer: Whether it be dog or wolf, the primal instincts take over. Every creature, in nature, has an urge to seek out their own kind. When the husbands were bitten, they are consumed with the desire to hunt, kill and mate.