I have added Uruk-hai as an NPC race to my game. One of the aspects of them is that they are created by evil clerics of the god Uruk Khan who gives them life.
At creation, all Uruk-hai are males.. This is primarily for control over their numbers. However, say the evil cleric who created the Uruk-hai should die before all the Uruk-hai were all dead.
Would the Uruk-hai be able to mate with females of other humanoids to perpetuate the species or not? This is the question Iam pondering.
If so, then I am inclined to think they might only be able to breed with orcs or half-orcs. Then again, I am also inclined to think that they might be able to breed with any "magical" race such as elves as well.
Think of the story possibilities if a band of renegade Uruk-hai, bereft of creator cleric, should take to raiding orc and elf villages and towns to capture females with which to breed more Uruk-hai.
On the other hand, being magically created in such a way, it's highly plausible that they cannot breed at all and would simply die out as their raids and rampages eventually caused them to die off.
This could lead them on a path to hunt down other evil clerics in an effort to compel them to align with Uruk Khan and create more Uruk-hai.
Also, what possibilties exist that one of the created Uruk-hai could develop the ability to become an evil cleric themself and create more after aligning with Uruk Khan?
I'd like to thank Mogo from the DF chatroom for providing some very interesting feedback in a similar discussion.
What are your thoughts on this?