A dog’s devastated reaction to being put on a diet has broken thousands of hearts across the world.

TikTok is famously full of videos of cute pets, either up to something hilarious or just being damned right adorable.

But a video of a beautiful Boston Terrier named Toby has made many fall in love.

In the video, Toby can be seen eagerly waiting by his bowl ready to be fed, but with his owner pretending to put him on a diet, he doesn’t get quite the amount he was expecting and his reaction is just heartbreaking.

He lets out a sad yelp and points to the bowl as if he’s asking for more.

In a video posted by @tobythegentleman, the caption read: “His reaction made me sad.”

He was eagerly waiting by his bowl and was ready to be fed
He was eagerly waiting by his bowl and was ready to be fed (
Image:
tobythegentleman/tiktok)

The video has since gone viral with 35.8 million views and thousands of comments.

And while it was just a joke by the owner, many were quick to demand Toby was given more food, to which the owner replied to say he had.

One user said: “Now you gotta give him more, he's so cute.”

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A second said: “Give him the rest and extra now.”

Another dog lover soon added: “He deserves it all.”

It seems many were in agreement as just how sad it was, especially the noise Toby makes at the end of the video.

One commented: “That noise broke my heart. while another said: “The sad cry.”

Toby's sad reaction won him many fans (
Image:
tobythegentleman/tiktok)

Another commented: “OMG this one broke my heart.”

Toby has quite the following on TikTok with 1.3 million followers.

It is not the only time dogs fans have had their hearts melted by the social media platform in recent days.

His owner was pretending to put him on a diet (
Image:
tobythegentleman/tiktok)

A less-than-impressed dog stolen many hearts on TikTok after her stunned reaction to its owners grooming attempts – and some say the poor pup even looks like a totally different dog.

Sharing the before-and-after photos in a video, the pup's owner's caption read: “Pls for the love of God, don’t come at me.

"I genuinely tried my best and feel horrible.”

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The video has gone viral with 4.8 millions views and has attracted thousands of comments.

Many users were even questioning if it is even the same dog.