https://wow.gamepedia.com/Ask_CDev#Ask_CDev_Answers_-_Round_4
“Do half-dwarves (i.e. human and dwarven parentage) exist?”
“There are currently no half-dwarves in the lore, but anything is possible with magic!”
So I guess the sky is the limit for the time being.
Worgen/Vulpera hybrid would be interesting to see.
gnome-vrykul crossbreed is a human.
I dont know what I expected.
She exemplifies the best traits of her parentage #Amazing
I’ve heard that worgen birth human children, so it may end up just being a human vulpera hybrid
Half vulpera with the other half being human would be a hit to some crowds.
But I do not want to imagine how they are being concieved
The number of puns in just three-word sentence xDDDD
Please no, that would be… disturbing.
OMG 
Medan he was part human part orc part draenei and full garry stew
we don’t mention that name
They’re called wrongs.
Wel we know Humans and Elves can breed (Unfortunately), we know that Orcs and Draenei can, we know that Orcs and humans can.
We know that two Worgen parents will have a normal uncursed human child.
We have evidence of other mixed species relationships in the game, but no idea that they are cross fertile yet.
The rules seem to be fast and loose, but some things make sense.
It seems logical that all the Titan created races would be cross fertile, without going into the physical mechanics of it. We know there is a Gnome and Human couple in Scholazar Basin for example, but no idea if they have a kid.
We know certain things -Could- possibly work, like Native races of common ancestry, so for example, Trolls and Kaldorei, and certainly Kaldorei and Sin’dorei, But thats probably getting into the realms of ickiness best not thought about.
Draenei and Orcs is an insanely stupid one, as they are two alien species. Unless Draenei are like some intergalactic Captain Kirk to whom the Prime Directive goes out of the window if a new Alien species has females then they should in no way be cross fertile, but eh, Blizz be Blizz.
Then you have things like…Well…Trying to be delicate about it, if they were still together Kalecgos and Jaina would not be having kids. In Fact Dragon and human mating, whilst possible in their humanoid form, would be a sterile union. A Female dragon could not be impregnated by a male human, and a Female human could not be impregnated by a male dragon, the two types of genetic material are utterly incompatible, one is a mammal, the other is a reptile, one naturally has, uh, bits, the other naturally has a kind of swiss army knife device regardless of gender that does all the stuff that goes on downstairs including excretion. A Humanoid mother would not lay an egg, for example, because that all happens in utero, and cannot survive outside of, well, her, you know what.
So even a Dragon in their humanoid form could not carry or sire a child with an -actual- humanoid.
Why did I just try to work that all out in my head…
'Tis both the gift and the curse of a learned man with a calculating and analytical mind.
Cause you didn’t want to think about a gnome and a dragon.
i think i have that webpage bookmarked actually
Guess its time to dust this off;
In most fantasy settings the “beast races” are incompatible with most others…
If that’s true for WoW as well, then Vulpera, Tauren and Pandaren would only be able to breed with others of their own species.
Easy mode is going by the ruleset that father doesn’t matter, it’s the mother that dictates the look.
Otherwise, Orcs and Ogres makes sense since they are related. Same with Trolls and Elves. Most other combinations is probably just old god (word too indecent for 'mericans).
Ohhh mama, he’s DUMMY THICC