A young Irish man has revealed how he found his father asleep next to the family’s cancer-ridden dog.

Jack Graham, 23, from Northern Ireland, got up in the middle of the night to find his father Mark asleep next to the 17-year-old dog’s cushion.

Graham filmed the “sad” but “heart-warming” moment and shared the video to social media on November 9, the Daily Mail reports.

He said: “I was walking to go to the bathroom and I walked past my father's room and his door was open which isn't normally like him, I looked in and seen he wasn't lying in his bed.

Its official my heart is well and truly broke, my dogs 17 years old and she’s been acting differently and we are all worried about her and I notice my dads not in his bed and I go down and he’s lying sleeping beside her bed because he’s worried about her🥺🥺🥺🥺🥺🥺 I’m DONE pic.twitter.com/3yCPgmdPeu

— Jack Graham (@Jack_grahamx) November 9, 2019

“So I went down to the living room to check and see if he had fallen asleep on the sofa and when I had came in I saw him lying beside my dogs bed.

“It made me really sad but also in a happy way, I thought it was really cute and heart warming.”

He posted the video to his Twitter page with the caption: “It's official my heart is well and truly broke, my dogs 17 years old and she's been acting differently and we are all worried about her and I notice my dads not in his bed and I go down and he's lying sleeping beside her bed because he's worried about her. I'm DONE”

Everyone please don’t take your dog for granted, please be kind and love them because they love u and they have a short life so make it the happiest. Also please adopt dogs from the shelters❤️ she is the best rescue dog that’s ever existed pic.twitter.com/LKIZgggNUN

— Jack Graham (@Jack_grahamx) November 9, 2019

The video has gone viral, gaining over 359.6K views and 27.8K likes. Several users have sent Graham and his family heartfelt messages as the family spend their final days with their beloved pet.

Since then, Graham has shared other clips of his dog Sophie, a mixed-breed Foxhound and Border Collie.

In one clip, he wrote: “Everyone please don't take your dog for granted, please be kind and love them because they love u and they have a short life so make it the happiest.

'Also please adopt dogs from the shelters. She is the best rescue dog that's ever existed.”

Heart-melting: Father sleeps next to family dog battle cancer, cause he's worried about her.Twitter / Jack Graham