"As soon as we heard them, we thought, 'uh-oh'. When the fireworks started, Bruno just went spare and smashed through those doors in any way he could.
"He fought to get into the house,"she said.
Bruno was bleeding heavily from the mouth after his ordeal, which involved tearing a large chunk out of the laundry door, but Ms Griffis said it was remarkable his injuries were minor.
"There was blood everywhere. He could have really hurt himself.
"Those cat doors are only plastic but that stuff is really sharp when it breaks.
"The wood veneer on the door also breaks off very sharply, so he could have cut an artery."
Bruno's owner Mel Cameron said this was not the first time Bruno had made a bolt for it at Guy Fawkes.
Last year, he escaped from Ms Cameron's previous home and was found a day later near Hood Aerodrome.
"He jumped a fence we didn't think he was capable of jumping, and he was off," said Ms Cameron, who moved in with Ms Griffis a month ago.
"Just about the whole town was out looking for him. I think he was heading south, along the coast - my parents live down that way - and he was looking for a safe place.
"He just wanted to get as far away from the fireworks as possible."
While Bruno is now in fairly good spirits, his "mums" remain concerned about the effects of fireworks on pets and would like to see them prohibited for personal use.
Ms Griffis said she was meeting more and more people who "absolutely hate Guy Fawkes" because their pets became traumatised.
"There's been a lot of debate about banning fireworks because of animals' fear of them. I think there's going to be public pressure for something to change.
"I don't think more education is going to do it. If you make fireworks available to young kids, they're going to do silly things with them. It's just a big lark to them," she said.
Ms Cameron said she hoped the Government would take action on the issue.
"I would prefer to see them banned for home use. They should have public displays only."
