Thread:2804:431:C7DC:1A3E:34F4:1A77:CB44:5122/@comment-961279-20191216151535

When adding a category, you have to be very careful if you add it to a category page. When you do that, you aren't saying, "Some of the pages in this category are also in this other category." A category on a category page says, "EVERYTHING in this category is in this other category."

Dogs are canines so you can add a "Canines" category to a page about a dog. A wolf is also a canine, so it can also have a "Canines" category on its page.

But if you add the "Dogs" category to the category page about Canines, you are saying wolves are dogs. They are not.

Please do not add any more categories to category pages unless you're absolutely sure the new category fits EVERYTHING on that page. 