Dogs are man's best friend, right? Nothing more loyal. Well, here's some proof for that theory - home security footage shows a dog waiting by a window for his owner to return, over a period of ten hours. You can watch the video here:
In the clip, the faithful hound can be seen staring longingly out of the window of the house in China as the hours drag by.
As you might expect, when the one-year-old border collie named Pi Dan (or 'Naughty') is finally reunited with his owner, he can be seen jumping for joy.
The footage was uploaded to Douyin (the original TikTok) by a Ms Zhang, who lives in the city of Shenyang in the north east of the country.
She said she was heartbroken when she saw the footage, but said there's nothing she can do about her loyal pooch's unwavering devotion.
Speaking to The Daily Mail, she said: "He does it very often. Most of the time, he would spend the entire morning just waiting there. Sometimes he would maybe take a short nap in the afternoon.
"It broke my heart seeing that footage, but I have no other way.
"I try my best to take him everywhere to play during weekends and holidays. I also considered keeping another dog, but I was worried that they would both wait for me. I would be even more heartbroken."
Other dog owners empathised with her predicament.
Commenting on the clip, one person said: "After keeping a dog, not being home for one day feels like a sin. I would feel so guilty and I would do anything to stay with it all the time. It's like being in a romantic relationship!"
Another added: "I have the exact same working time as you. My dog has the exact same waiting time as yours."
The heartache dogs feel when you're not there is deeply entrenched. Wssentially, they're not equipped to cope with your departure because of their differing evolutionary history.
Dr Sean O'Hara, lecturer in wildlife cognition and behaviour at the University of Salford, told LADbible: "Today, although we now occupy the same social group, there's an issue in that we come from different evolutionary social group backgrounds.
"Humans live in a fission-fusion social system - one where, over the course of a single day, groups join, dissolve, fragment and meet up again, all with groupings of varying composition.
"Dogs have experienced this form of social living for a much shorter period of their evolutionary history than we, having evolved living in fully cohesive groups - i.e. ones that don't temporarily fragment.
"Social isolation is therefore often problematic to them and they can experience anxiety due to separation.
"It's also true that with dogs being social animals they are likely to feel less secure in those times they are left in social isolation. Social animals have be shown to crave social contact when isolated more than food."
So if there's any positive we can take from this pandemic, it's the knowledge that countless dogs across the world are much happier now their humans are working from home.