没有，前两个是没说，后三个是不可能

兽人貌似不太现实

“精灵的长相不符合奥克的审美，它们觉得精灵丑爆了”

奥克和其他种族之间不可能有爱情，只有特别坏的坏的和没那么坏的，矮人和另外几个种族之间可能也有生殖隔离，理论上只有精灵和人类能生出孩子，但是与矮人也不是没有可能

套着奥克外观的迈雅和奥克可以生育。
Melkor had corrupted many spirits - some great, as Sauron, or less so, as Balrogs. The least could
have been primitive (and much more powerful and perilous) Orcs; but by practising when embodied procreation they would (cf. Melian) [become] more and more earthbound, unable to return to spirit-state (even demon-form), until released by death (killing), and they would dwindle in force.
“米尔寇腐化了许多神灵——有些强大，例如索隆，或者略逊一筹，例如众多炎魔。最微不足道的能成为原始（而且强大和危险得多）的奥克；但当有生殖行为的时候，他们会（参见美丽安）[变得]越来越被束缚，不能转变回灵魂的状态（哪怕魔鬼的外观），直到被死亡所释放（被杀死），而且他们的力量会退化。”

奥克与人类之间也可以生育。
Finally, there is a cogent point, though horrible to relate. It became clear in time that undoubted Men could under the domination of Morgoth or his agents in a few generations be reduced almost to the Orc-level of mind and habits; and then they would or could be made to mate with Orcs, producing new
breeds, often larger and more cunning. There is no doubt that long afterwards, in the Third Age, Saruman rediscovered this, or learned of it in lore, and in his lust for mastery committed this, his wickedest deed: the interbreeding of Orcs and Men, producing both Men-orcs large and cunning, and Orc-men treacherous and vile.
“最后，尽管说起来很糟糕，但却有个令人信服观点。时间能够证明，用不了几代，人类无疑就能够慑服于魔苟斯或者他代理人的控制之下，在心智和习惯上退化到奥克的水平；他们会，或者能与奥克交配，产生出新的品种，通常更大，更狡猾。毫无疑问多年之后，在第三纪元，萨茹曼再次发现或者从书籍中学到了这一点，因为对此很是精通，他在贪欲中做出了最邪恶的行径：让奥克与人类交配，制造出又大又狡猾的人型奥克，还有奸诈和卑鄙的奥克型人类。”

奥克无论是精灵起源还是人类起源，与精灵、人类都不存在生殖隔离。倒是矮人，奥力创造的，可能和精灵以及人类存在生殖隔离。

黑兽是吧？

值得一提的是霍比特人中有老图克娶了个精灵老婆的传言（不过应该就是形容图克家族爱冒险而已吧）