Why do cats wear scarves in anime? Sakamoto from Nichijou



The cat from Ninja Hattori (Note: I don't remember the details but I knew an episode where the cat was heartbroken because he lost the scarf and thought that his master would abandon him)


Why do cats wear scarves in anime? What does it signify? Does it signify that it is domesticated/adopted? The color of the scarf is mostly red. Why?

Happy from Fairy Tail also wears something which is sort of a backpack used to carry food and items for battle:
So they stand out from other, normal Cats.
Similar how many Protagonists in Anime have a different hair color, eye color or some other special feature, and many Girls have varying hair-colors so they contrast from their
predominantly brown / black haired normal Classmates.
So they appear more human.
By giving them human-like characteristics, like wearing accessories, they appear more civilized, intelligent and human like.
Because we do this in real-life to, I guess.
Some people just like to dress up their dogs and cats, so it wouldn't be impossible for Anime-Characters to have the same ideas?