|Mammoths of Wrangell Island|
In a paper published in PLOS in 2017, Rebekah Rogers describes that last populations of these once mighty beasts:
"The last woolly mammoths to walk the Earth were so wracked with genetic disease that they lost their sense of smell, shunned company, and had a strange shiny coat."
These genetic mutations may have given the last woolly mammoths "silky, shiny satin fur and let do a loss of olfactory receptors, responsible for the sense of smell, as well as substances in urine involved in social status and attracting a mate." In any event, their end was not a pretty one or the graceful exit one might have imagined. Excess of genomic defects in a woolly mammoth on Wrangel island; Rebekah L. Rogers , Montgomery Slatkin; Published: March 2, 2017https://doi.org/10.1371/journal.pgen.1006601