Female dog = "Сука."
My research has shown that "sukka" or "cука" is a Russian swear word for calling someone a female dog.
There are several ways to say dog in Russian. The word "dog" is Russian, but refers specifically to Great Danes. A generic term for a dog is sobaka.
женщина (zhenshchina)
"Suka" is a Russian word that translates to "bitch" or "whore" in English. It is a vulgar and derogatory term used to insult someone.
Lubovnik (male), lubovnitsa (female).
Lubovnik (male), lubovnitsa (female).
No, "she dog" is not a commonly used slang term. It may be a regional or colloquial expression, but it is not widely recognized.
собака - sah-bah-KAH
The Spanish word for a female dog is "perra." A male dog is "perro." These words are not used in the same manner in Spanish as they are in English, i.e., perra is not as a curse word.
a female dog
лабрадор (a type of gun dog) [labrador].
Maybe the 's' word you're thinking of for a female dog is 'she'. Female cats are routinely referred to as 'she cats' while the males are 'tom cats'. However the correct and appropriate term for a female dog is, 'bitch'. This doesn't mean anything derogatory or insulting to the bitch, it's simply the word for female dogs.