It's a tradition more than 400 years old. But these days Guy Fawkes is less about the past, and almost entirely about the big bangs. And for the SPCA, it's their busiest night of the year.
"Certainly, around this time of year, approaching Guy Fawkes as well as the time shortly afterwards, we'll experience quite a significant rise in calls to our animal reporting line specifically in relation to lost animals," said SPCA Inspector Jason Blair.
"We find a lot of dogs go missing over that period, either Guy Fawkes night or the day after."
There's also an increase in animals being disturbed or stressed, and getting injured in the process. So what can pet owners do to make things easier for their fur babies?
"Really it's about comforting them, keeping them safe," Blair said. "Putting them in an environment where they're going to be looked after and not likely to injure themselves or run away. A lot of the time if you can bring an animal inside, if it's a small companion animal, close the curtains, put on the radio or TV and distract them from what's going on outside."