Beaver Fever is an episode of Wabbit: A Looney Tunes Prod. It was first released on DVD on April 26, 2016.
It is hot, so Bugs Bunny decides to take a dip in a lake to cool down. On his way, he sees several animals leaving, saying that the lake is closed--to them. Bugs takes a graceful dive into a lake--only for someone to push a log right where he falls, causing the log to fall of him and knocking him out of the lake. A beaver climbs out of the lake and declares that it is off-limits to anyone but beavers. Bugs returns to the lake disguised as a beaver. He manages to get in by guessing the answer to everything as "teeth." He comes in, along with all of the other forest animals who are also disguised as beavers. While swimming in the lake, Bug's fake beaver tail and cap come off. The beaver gets angry and orders them out of the lake.
While guarding the lake, the beaver sees several bubbles coming from it. He swims over on a log and sees Bugs and a turtle playing badmitton underwater, and three other animals lounging. He orders them out of the lake. He chases them into a cave, but the beaver is chased away by a submarine piloted by the animals. They make it to the surface, but Bugs notices a giant battleship manned by the beaver and orders them to submerge. The battleship throws several explosives at the submarine, breaking holes in it and causing it to fill up with water. The submarine shoots several torpedoes at the battleship, who lifts its "dress" up, causing the torpedoes to hit the dam and destroy it.
Bugs and the beaver land on a piece of isolated land. Bugs hopes that they can share the ocean. The beaver claims it for "beavers only," thinking it is a lake, and jumps in. The beaver is eaten by a shark and starts declaring parts of the shark's digestive system exclusive to beavers. Bugs concludes that "making everything beavers only, only made that beaver lonely."