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There's nothing like a mother's love, but what about a mother's...nose?  In the animal kingdom, animal mom's can pick out their offspring from large groups/herds/flocks by their youngster's personal smell.  How about us human animals?

TheSun.co.uk reports on a new study finds mothers have extremely sensitive noses when it comes to how their offspring smells—including knowing the scent of puberty.  Oh-oh. That puts even more pressure on smells in the teenage years!

German researchers found mothers could identify a child’s developmental stage by only their scent with an accuracy of about 64 percent.  64% - that's people noses not your pooch's noses! Pretty amazing, right?

Moms also tended to identify the more pleasant odors as coming from prepubescent children, Researchers say the finding suggests that body odors can perhaps encourage love, affection, and care towards infants and young children.

But then, there comes a day when the kid must cut the cord and prepare to move out and into a life of their own and not coincidentally, the stronger scent given off by teens around puberty -not found as pleasant by most moms - could be meant as a biological marker to help a mother detach from her child.

So how does this explain Joe Biden's infatuation with sniffing women's hair?  Stay tuned for a study on that!