Watch: Clever dog on Lorraine's show opens door by itself
The husky-like pooch could be seen in the background in the home of a competition winner during the promotion of a phone-in on the ITV show.
As the presenter on-screen discussed details of the competition, viewers saw the dog jump up, push down on the door handle with its front paws, nose the door open and then stroll out into the garden, completely unaided.
When Lorraine Kelly cut to the This Morning studio to ask what was coming up on their show, all they could talk about was seeing the dog open the door.
Schofield said dog-lover Willoughby had spotted it.
She exclaimed: "It blew my mind!"
Kelly asked: "How did I miss that?!"
Viewers were also quick to point out what they had witnessed on social media.
One tweeted: "The Oscar for best performance by a dog goes to….."
Another remarked: "@reallorraine did that dog just open the door!!! A call to BGT is required asap."
One viewer pointed out: "Seen the dog opening the door & going outside was wondering why @lorraine never mentioned it."
Willoughby recently brought her own pet dog Bailey, the Golden Retriever, into the This Morning studio.
She got her to demonstrate some "new tricks" live on the show.
These included Willoughby telling Bailey to lie down while she left a dog treat on the dog's paw. She then instructed the dog to wait before giving her the go ahead to eat it.