A user with the name ReubenJamesGilbert shared the clip of the poor fox, which has been viewed by more than 535,700 times since it was shared on Sunday.

The video starts with Reuben panning the camera over to the disheveled-looking fox before commenting: “Not quite sure what’s going on.”

As the video continues, the sickly-looking fox can be seen huddling on the sofa, with its fur appearing to be patchy.

Soon afterward, Reuben’s dad entered the home and chided his son, who was laughing while recording the clip.

The dad said: “Oh f*** off. Oh, b***** me. No, it’s not funny Reubs. We’ve got a mangy animal in here.”

As of Monday morning, the video had been liked on some 54,700 occasions and attracted more than 1,000 comments.

Unsurprisingly, there were many commenters concerned about the fox’s health who soon shared their thoughts with Reuben.

One TikTok user posted: “I genuinely thought it was a bad taxidermy job at first.”

Another added: “Finding a fox in the living room is bad but the fact it has mange and it’s sat on your sofa.”

A third commenter added: “It’s like a 30-year-old Sylvanian Family figure that all the fur has rubbed off over the years.”

Other TikTok users were concerned that the fox appeared to be in a very poor state of health and asked Reuben to call someone to help it.

One person said: “It has mange badly. I would call a rescue center that deal with foxes and they will advise and put staff in place to catch it and treat it if they can.”

But Reuben added in an update post: “Soon as I approached it, the fox ran out the house so sadly no part twp. Hope it’s fine tho.”

Newsweek has contacted Reuben for comment.

Mange can affect numerous mammals, most notably foxes, bears, raccoons and squirrels.

The Wildlife Center of Virginia said the skin disease is transferred to new hosts “when the affected animal comes into direct physical contact with others.”

It continued: “Larvae and nymphs may also fall off the host animal and can survive in the environment for several weeks.”

Humans can get a specific variety of scabies and can become infected with types of the S. scabiei mites after coming into contact with wildlife or domestic animals and could develop a short-lived infection, according to the wildlife center.