"Jerky Turkey" from 1945 ends with both the pilgrim and the turkey ending up inside Joe the bear's stomach. Although it's depicted in humoristic manner, the fridge horror kicks in once you realize the implications of the fact that they basically got eaten. Which means they are essentially doomed, they'll never see their families again, and probably they'll eventually get digested alive. It doesn't help that the cartoon ends with them still in the stomach and neither of those characters is ever seen again...