Humans will laugh themselves out of a horrifying situation to which there is nothing they can do. I don't think it's entirely inappropriate because appropriation is something we do as a cultural norm. In this case any emotion of discomfort and helpless watching would likely ignite laughing in the same way many people watch horror to feel relief that reality is safer. I would feel differently if they were laughing and participating in the animals fate, but they cannot so I would expect the weirdest reactions out of people.