How many bitches are there?

The term "bitches" can refer to female dogs or be used colloquially to describe women in a derogatory manner. If you're inquiring about the number of female dogs, there are millions worldwide, as pet ownership is prevalent. However, if you're referring to the slang usage, it's important to approach such language with sensitivity, as it can be disrespectful. If you meant something else, please clarify!