Would you consider hognoses to be "dangerous" to other pets like cats, small dogs, parakeet, etc?
Not particularly - in fact, in the cases of cats and dogs especially, I’d be more worried about them being dangerous to the hognose. But as long as they’re kept apart, there shouldn’t be an issue either way. (I have cats and a dog, but I’m not entirely sure they know that Pretzel exists. :L)
But yeah, I wouldn’t exactly recommend letting a hognose chill out with your cats, small dogs and parakeet, but that’s probably pretty obvious anyway. :L