Showing rats interacting with predator species online is irresponsible and can contribute to animal cruelty.
I appreciate that your cat/dog/ferret/turkey is special and super wonderful, one in a million, so gentle, you have the best bond with them, and they wouldn’t hurt a fly, ever (just the same as everyone else’s pet tbh, if you ask them. But I’m sure yours is definitely the exception). But the danger is that everyone else thinks their predator is just as special, and that putting it with a prey animal will be fine. Which it will be until someone gets injured or killed.
Showing something dangerous as OK encourages other people to do it, and we’re not here to risk other people’s pets.