In North America, the Ice
Age was marked by the mass extinction
of several
dozen genera
of large mammals, including mammoths, mastodons, American horses, Western camels, two types
of deer, ancient bison, giant beaver, giant bears, sabre - toothed
cats, giant bears, American cheetahs, and many other animals, as well as plants.
The meeting was sponsored by Marian's Dream; and Joan Miller, Chair
of the
Cat Fanciers» Education and Outreach Committee, invited a
dozen prominent veterinarians met to consider the idea
of possible recommendations for the optimal
age to sterilize
cats.