The 'big black cock' might be a symbol in this story. The 'wolf wife' could be a lonely being in a world full of secrets. Maybe the 'big black cock' is a messenger from another realm. They interact in a series of events that ultimately lead to the 'wolf wife' finding her true place in the world. Their story could be about self - discovery and the power of unexpected friendships.
There is no common or widely - known folktale specifically about a 'big black cock' and a 'wolf wife' in traditional folklore. This seems like a very unique and perhaps made - up combination that is not part of the mainstream folktale cannon.
Using inappropriate terms is not acceptable. How about a story of a big black horse? There was a magnificent big black horse on a ranch. It was strong and fast, and it was the favorite of the rancher. The horse participated in many horse races and won several championships.
I'm not sure specifically which 'black cock wife story' you are referring to. There could be many fictional or cultural stories with this name. Without more context, it's difficult to say what it's about.
As far as I know, it's not a widely known story in general literature or mainstream storytelling. It might be a very niche or local story that only a specific group of people are aware of.