MrRoundtree17
MrRoundtree17 t1_jdvcxl5 wrote
Reply to comment by vsmack in Why are nonhuman erect bipedal animals so rare? by violetmammal4694
Yeah, they’re definitely still helpless. But anyone who’s been around a newborn can attest to how shockingly fragile and vulnerable they are. At 6-7 months babies can crawl, sleep through the night, have more weight on their bones, etc.
MrRoundtree17 t1_jdugj8e wrote
Not really an answer to your question, but a fun fact. In order to stand upright, human legs have to connect directly downward from the pelvis. This means the opening which baby’s pass through during childbirth is smaller than in 4-legged animals where the legs connect at an angle to the pelvis. In order to fit the baby through the narrower passage, we evolved to give birth earlier when the baby is smaller. See, most mammals have a similar gestation period relevant to their life span. The human gestation period should be around 14 months. So that’s why newborn babies are such helpless potatoes when they’re born at 9 months.
Edit: I kept saying tailbone when I meant pelvis.
MrRoundtree17 t1_jdvhy35 wrote
Reply to comment by vsmack in Why are nonhuman erect bipedal animals so rare? by violetmammal4694
Haha, yeah not for mothers lol. Those first 3 months are rough with a newborn. I have two myself (second is now 8 months) and it was almost like clockwork that at 3 months old they started sleeping through the night and it felt like we got past the super vulnerable phase. Best of luck to you and family.