Koalas are "declining alarmingly" in Australia now.

Sad! But, that is evolution. Next will come another species that will be just as alluring. That is the sad fact of life on earth!

Sad! But, that is evolution. Next will come another species that will
be just as alluring. That is the sad fact of life on earth!

That is a very astute observation, shaor, and absolutely correct.

This vacancy of opportunity is a void that will be filled.Natural Biological Law will not be denied nor violated; that is to say, a vacancy in an ecological niche, can and will be filled by an entirely different group from the original inhabitants, seeking the social sustenance intended for the extinct. For example, the niche that was left vacant by the extinction of the "Tarpan" has been filled by other animals of an entirely different species (in particular a small horse breed, the "Konik" ).