And many think them abominations that shouldn't be created even as a last resort. Such creations often turn out to not be dwarves at all. There are times when a tribe will fill a great need by crafting specific traits into a dwarf. The newly born dwarf blinks and is handed a hammer, battle ax, or ale. The dwarf statue glows brilliantly, and is transfigured into blood and sinew. Ancient words are chanted, and blessings intoning the names of the fourteen dour dwarf gods are muttered. The statue will not become a flesh and blood dwarf without treasure.

But all dwarves have beards, and usually mustaches. Mohawks are a popular 'mutation' for example. Many clans have developed tribal embellishments over the years. So the statue looks a lot like any other dwarf. But most people use male pronouns because dwarves don't correct them. It's a species designation, and gender is a somewhat alien concept to them. This is because there are also no dwarf men.

You may have noticed there are no dwarf women, or heard speculation that their females are bearded. They find a rock worthy of dwarfiness, such as good marble, and begin to carve away until a statue of a dwarf is made. When a community decides they need a new dwarf, they start the great chiseling. It is a little known fact outside of dwarf communities, but dwarven kind do not reproduce by anything as silly as mingling gametes.*

Mountain dwarf vs hill dwarf