Smilodon gracilis ("the slender Smilodon") was the smallest and earliest of the sabertooth cats. It first appeared in the United States about 2.5 million years ago and lived until about 500,000 years ago.
... living together, 8.2% have a female householder with no husband present, and 42.6% are non-families. 29.5% of all households are made up of individuals and 4.9% have ...