Human - Tregg Relations

Human - Tregg hybrids happen often, because the two types of biologies are similar. The resulting child doesn't live long.

In any case, the female is branded an outcast and shunned. In cases where the male is a Tregg, it may be put to death.

A recorded version of this happens in Beast Hunters: The Legend of Tawny, where the main character Tawny has relations with her human master, Gregory Gerhardt of House Gerhardt in Chawly.