does it serve a purpose for us to still have them aside from the obvious? i mean after birth. what about for animals *not* having them once they’re born? i was wondering specifically about rats and puppies. i’ve had both as babies and they all had a little black spot for a week or two, then it disappeared for good. when the rats were still pink with no fur i actually saw the black spot dissipate over time within like a week and a half or so
In: Biology
*Technically* most land animals are probably beetles and ants, which are born from eggs and so they don’t have umbilical chords.
But that’s a stupid answer and pedantic.
The real answer is that among placental mammals, most have a significant amount of body hair and rarely show their bellies except when entirely at ease, so you simply don’t have a chance to find the small scar of their belly button.
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