Bruce Cameron said he felt the controversy and subsequent investigation was "a colossal waste of time."
The author of A Dog's Purpose is moving on from the scandal surrounding the film to focus on his latest canine-centered tale.
Bruce Cameron's novel was the basis for the film, which came under fire last year when a video acquired by TMZ showed what some claimed was animal abuse on the set.
An investigation later concluded that no abuse had occurred.
Cameron is now calling the debacle "a colossal waste of time."
"[The story] was a vicious attack and it convinced some people," Cameron told InsideEdition.com this week. "But in the end it was groundless and it was handled pretty well."
He added that had anyone seen animal abuse on set, it would have emerged earlier, rather than the 15 months it took for the tape to surface.
"I thought, 'This is modern life. You get attacked, social media amplifies it so quickly,'" he said. "That’s just part of part of life and it's just what happens."
The movie, which starred Dennis Quaid and Josh Gad, grossed more than $180 million. Based on Cameron's 2010 book of the same name, it follows a dog's journey as he's repeatedly reincarnated.
His book spent six weeks at the top of The New York Times best-seller list.
"It was a realization of a life’s ambition," Cameron said of his work. "I remember thinking that’s what I wanted to do when I was a boy. I didn’t want to be an astronaut or a professional baseball player. I wanted to be a No. 1 New York Times best-selling novelist. I'm no longer a boy but it felt really good to cross that one off the bucket list."
Cameron is now getting ready to release his new novel, A Dog's Way Home, which is also told from a dog's point of view. This time, it's a pit bull.
"I wrote it partly because of the stigma," he explained. "Pit bulls are considered these ferocious, dangerous animals when some of them are the gentlest creatures in the world."
The book chronicles the journey of a rescued pit bull named Bella, who's adopted by a man in Denver. But because the city bans pit bulls, she's trapped by Animal Control officers, who threaten to euthanize her.
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For her own good, her owner sends her to another home hundreds of miles away, but she is determined to find a way back to him and sets off on a journey across the Rocky Mountains.
"It's an adventure story. It's a story of true love," Cameron said.
He hopes that one day it can be turned into a movie, calling it his most "cinematic" work yet.
"In the end I was really happy with A Dog's Purpose and I am really going to be happy when they make a movie out of A Dog's Way Home, he said.
But following the controversy surrounding A Dog's Purpose, he has some advice for filmmakers working with animals.
"I would say keep cameras rolling at all time, capture everything from every angle and then you won’t have any problems," he said.
A Dog's Way Home hits shelves May 9.
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