As Cody drives toward the storm drain, a woman in a navy bikini walks in the path of his truck. In the next shot, this same woman is walking toward his truck with her hair styled slightly differently.
The creature seen in the episode is clearly an alligator. However, it is alternately referred to as a crocodile or an alligator, which are two separate species.
When Mitch and Logan walk out of the storm drain with the crocodile in tow, the animal is dragging behind them, indicating it is either taxidermified or a puppet.
When Mitch finds Logan bleeding in the tunnel, in one long shot a crew member's hand is visible in the lower right corner.