Just to respond and agree with Lisa's post...
There may well be the occasional failure of adequate lactation among
animals in the wild, but depending on the species, the young will waste
away and die from lack of feeding.  (It is well known that *some*
species will cross-nurse or "wet nurse" young who are not thriving from
their own mom's milk.)  The females who bear non-surviving young will
subsequently be less likely to pass on the trait of abnormal physical
structure, hormones, etc. if the cause is genetically-based.  Natural
selection at work. 

Just my two cents...
Carole Jernigan
IBCLC, RN, BSN
San Diego, California
 
 
> Date:    Sat, 9 Sep 2006 08:55:34 -0700
> From:    Lisa Marasco IBCLC <[log in to unmask]>
> Subject: Re: hypoplasia
> I don't believe this is normal in nature. You do not see this kind of
> failure in the animal kingdom. 

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