[monocasa]

Evolution got around that by birthing what are essentially still fetuses compared to most other non-marsupial mammalian newborns and then continuing the base development process of the brain after birth. See how a lot of other newborn animals are already walking around just minutes after being born.

[harperlee]

Eyeballing based on my children development against other mammals, I’d say pregnancy should take about 2 years.

[mrguyorama]

A lot of animals come out walking! Imagine squeezing out a 30 something pound walking toddler!