Orcs as mammals Options

[IKerensky]

Yesterday I realise that Orcs got some deficiences as meta-humans that could explain why their growth rate are going down.

Orcs women give birth to a litter of 4 to 8 youngs (dont get me started on the semantics of the books).

But.

Orcs women still only have 2 breasts. So they cannot feed that much baby at the same time.

If you look at the mammals you will find that orcs are an exception to the rule that say that the number of breast are proportionnals to the number of births. On the other hand Orcs are the only primates that give birth to so many babies at the same time regularly.

So I ask the author to make their position clear :

Either the Orks go back to the more normal number of babies born but with a much faster gestation time

or

They go the full way they start, make Orks really animals and give Orcs female the 2 to 4 breast they currently lack in their evolutionnary path (for a total of 4 to 6).

Note : I am fairly aware that the modern world provide ample way to sustain babies without only ressorting to the mother ressource. But Nature usually dont care and used to provide the required equipment that go with the birth rate.