yes i think they can
no they have to be to adults (boy, girl)
You can get alien babies by creating two green Sims, a girl and a boy then make them...ya know. Then when the girl has the kid it is green like an alien. If you just want an alien kid both the parents are normal then i guess you are screwed. ha ha
Yes, they can have eggs as soon as the first eggs hatch.
She will produce two non-identical babies.
Pigeons normally lay two eggs.
One or two eggs at a time.
A queen ant can lay up to about 300,000 eggs in just a few days.
Brolgas do not lay babies: they lay eggs. On average, they lay two eggs per clutch. Occasionally they will lay just a single egg, or perhaps three.
Courtship and mating take place in flight. Once the hen is fertilized she lays a clutch of eggs (two or more) and incubates the eggs.
Penguins are birds. Birds lay eggs. Penguins can lay only one or two eggs at a time, depending on the breed
Not every animal or needs 2 to produce but it is very rare to find a hermit crab laying eggs, the best ways to get a baby Hermie is to find them at pet stores It is very rare for hermits crabs in captivity to lay eggs. You have VERY slim chances of getting eggs. and yes, you must have two genders to have babies. Hermit crabs lay eggs in salt water. Even if you did have salt water, they still wouldnt.
Are there really two-headed alien babies trying to take over the world?