Marriage
The true fact was that _most_ planets where humans and furries coexisted, mixed pairs were common and accepted, but because cathy's home of foc was almost exclusively foxes, she wasn't ever really exposed to the concept.
Lost Legend of Agrok Ch.5
I suppose it is just the chief and the warrior in me that is uneasy about the mixed pairs possibilities. it is unknown, and i cannot factor it into any kind of combat or political strategy.