At first glance, it might seem that Bluey and Bingo Boy are clearly boys, but upon closer inspection, it’s not always clear. For example, in one scene, Bluey is seen wearing a pink shirt with a green dinosaur on it. This could be interpreted as a girl’s shirt, and so it’s possible that Bluey is actually a girl. Similarly, in another scene, Bingo Boy is seen wearing what seems to be a boy’s jacket.
However, this could also be interpreted as a girl’s jacket, and so it’s possible that Bingo Boy is actually a boy. As such, it’s difficult to say for sure whether Bluey and Bingo Boy are boys or girls. However, based on the evidence available, it seems likely that they are indeed boys.