What are big female cats called?

There's no single term for "big female cats" as it depends on what kind of cat you're referring to:

* Domestic cats: Female domestic cats are simply called "cats" or "females".

* Big cats in the wild:

* Lionesses: Female lions.

* Tigresses: Female tigers.

* Leopardesses: Female leopards.

* Jaguars: Female jaguars (they don't have a specific term like lionesses).

* Cheetahs: Female cheetahs (also no specific term).

* Cougar: Female cougars (they don't have a specific term).

So, the term you use depends on the specific type of big cat you're discussing.