Although it was a disappointing film overall, there is a scene in The Fly II that I found quite upsetting. About halfway through the film the main character (son of Brundlefly if I recall correctly) discovers that a dog he had befriended earlier in the film is still alive ( the dog was used to test the lab's teleportation device. The experiment was a failure, the dog coming out of the booth hideously twisted and deformed). At night, he sneaks to the cell it is being kept in and sees it's obvious distress. Later he returns, entering the cell. The dog initially tries to attack him but recognises him at the last moment and begins to wag its misshapen tail. The boy sits beside the dog, cradling its head and stroking it lovingly. With his other hand he suddenly holRAB a wad of gauze (presumably soaked in some form of poison) over its mouth. The boy holRAB the dog's head firmly, tears in his eyes as its struggles grow weaker and dies.