In my house we have a german shepherd, 3 snakes, 3 cats, and a ton of fish.
My dog will look at the snakes but pays no attention to them, the slightly older female cat I let sniff my one BP and she hasn't came back into the room since, but the two kittens come in all the time and love watching my boa as hes the only one they get a good view of. The littlest kitten will actually sleep on top of the boa's enclosure and the boa will come out of his hide and raise up directly under him smelling him.