"Clearly they're aware that children interacting with doors is an issue," said lawyer Didier. "They're actually trying to make money on other products by selling them as protecting children, and I think that's talking out of both sides of your mouth."
A spokesman for the pet business trade association said he welcomed the ABC News investigation and hoped it would lead pet door manufacturers to provide warnings in the future.
"I think that now that it's known to be a problem, you'll see it there," said Bob Vetere, president of the American Pet Products Association. "To me as a parent, if something happened to my kid I'd be blaming myself. But if it was a problem that I had no idea could possible occur, I'd be thinking, gee, I wish somebody had told me about it."
Carol Ranfone has started her own web site, Pet Access Dangers, to share Matthew's story with other parents, and warn them of the risks involved with pet doors.
"I'm doing it for Matthew. It's like in my mind, I can't save Matthew's life, but I can save another child and if this is my goal in life and if this is my mission in life, then I'll do it."