Last month's Harpers had an excellent article by David Quammen, which was based on interviews with biologists and other scientists. They said that based on current projections, something like 80% of the plant and animal species will have disappeared by the end of the 21st century. It is a period of the greatest rate of extinction since the dinosaur age.
The animals who will remain are those who exist in symbiosis with homo sapiens, who while organized on the basis of private property, is destroying ecosystems left and right. These animals tend to be scavengers who feed on roadkill, garbage, etc. left over from capitalist consumption. The species who will probably survive with us include:
1) Pigeons 2) Rats 3) Crows 4) Seagulls 5) Cockroaches 6) Rats 7) Mice 8) Coyotes 9) Dogs 10) Cats, etc.
Louis Proyect
(http://www.panix.com/~lnp3/marxism.html)