However, don't take these photos as evidence that cats can't grasp the concept of personal space. On the contrary, like most animals and people, they're surrounded by this invisible bubble, too. Of course, every cat is an individual, and just like people, attitude may vary from day to day, but in feral cat populations, normal territorial range might be more than two miles.

A cat's tolerance regarding personal space also depends on how confident or insecure the animal is.

"Cats definitely value their own personal space," Natalie Cady Bishop of Cat Behavior Solved told Bored Panda. "If it is 'invaded' they may even resort to swatting or biting you! They prefer interactions to be on their terms."

So if these animals know the importance of keeping distance, why do they sometimes are forceful for attention? According to Cady Bishop, hunger and the desire for play and affection are probably the main reasons.

And you better be ready to please your kitty's needs! Even if you don't feel like it at the moment. "There is not a polite way to 'shoo' a cat in their mind. I recommend playing with them and then giving them treats or a small meal in a puzzle feeder or treat ball. Added physical and mental stimulation will result in a happy cat who will likely choose to leave you alone," Cady Bishop explained.

"This technique usually works because a cat's normal progression is 'hunt, catch, kill, eat, groom, sleep.' This is important to remember if you have a cat who wakes you up in the middle of the night. Doing this before you go to bed may ensure that you get a more restful night's sleep."

So there you have it, folks. Cats know the value of privacy, and if they choose to invade yours -- welcome them.