Zombeavers (2014) on Netflix

Two reckless truck drivers transporting toxic chemical products hit a deer on the road and one barrel falls off in the river and is carried to a beaver's dam. The college mates Mary, Zoe and Jenn travel to a cabin nearby the dam that belongs to Mary's aunt Myrne Gregorson. They swim in the lake and unsuccessfully seek a beaver at the dam; however they stumble with a bear and the hunter Smyth saves them. During the night, their boyfriends Sam, Tommy and Buck arrive at the cabin and Mary and Zoe have sex while Jenn has an argument with her unfaithful boyfriend. When Jenn goes to the bathroom, she is attacked by a beaver but Tommy kills the animal that appears to have rabies. On the next morning, the group goes swimming in the lake and they are attacked by zombie beavers. Will they succeed to escape?