How do you say a female dog? - briefly
A female dog is referred to as a "bitch."
How do you say a female dog? - in detail
In English, the term for a female dog is "bitch." This word has been in use since the Middle Ages and is derived from Old English "bicce," which means "female dog." While it is the most common and widely accepted term, it's important to note that its usage can be considered offensive when referring to humans. Therefore, it's crucial to use this term only in the context of animals to avoid any misunderstandings or offense.