Berkshire, UK - When Claire checked on her dog via the home pet camera, she couldn't believe her eyes. Shortly after, she and her partner left the restaurant in a hurry to help the poor pup!

She was sitting comfortably in a restaurant with her partner, Jack, just wanting to see how her Labrador CJ was getting along at home.

But when Claire saw her four-legged friend, she was horrified!

The couple had made a mistake that they were quick to put right, with CJ the dog left sitting all alone in the dark, looking very dejected in the suitably somber video.

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"We checked the cam to see what he was doing and realized he was sat looking sad... it broke our hearts," she told Newsweek.

Neither of them had thought about how early it would get dark, and their pooch was left whimpering in the gloom.

"My partner Jack and I forgot to turn the lights on," she explained, and added that they immediately paid their bill and rushed home to comfort the sweet doggo.

"NEVER leaving the house again without double checking the light is on for my dog when it gets dark," Claire wrote in the caption, noting that "at least the radio was on!"

"No light and no bluey???" asked one commenter in horror, to which Claire wrote, "trust me… after seeing this, the whole house will be lit up and the TV will be on permanently."

Other users wrote in that they also like to put on kids' shows featuring dogs – like Bluey or Paw Patrol – to entertain their pups while they're left home alone.

"I’d never leave the house again," said another user, while one wrote, "I feel like such a bad parent when I forget to leave the light on."