The first species listed was the Indiana bat, found mostly in caves in southern Indiana, but also in other Eastern and Southern states such as Alabama, Kentucky and Connecticut. Its 2009 population estimate was 387,000, which is less than half of what the population was listed as in 1967. The Delmarva fox squirrel, meanwhile, was the second, and is typically found within Maryland's Kent, Queen Anne, Talbot and Dorchester counties. In 2011, it stands at just 10 percent of its historical range, with the squirrel populations found naturally only in the above Maryland counties.
The timber wolf was the third species listed, and has since recovered to a population double that in 1967, throughout the United States. The red wolf, meanwhile, was the fourth, and is found in Florida, North Carolina and South Carolina; it is still endangered in 2011. The San Joaquin kit fox is the fifth species, and is typically found naturally in California and Nevada. The fox is also still listed as endangered as of 2011.
The grizzly bear is the sixth endangered species found on the first list, and its current populations are less than 4 percent of what they were in the 1800s; fewer than 2,000 of them are found in Wyoming, Montana, Washington and Idaho as of 2011. The Florida panther is the seventh, and is now found only in Arkansas and Florida. The Florida Panther National Wildlife Refuge is one of several refuges set up for this animal to help it recover to its pre-1967 population numbers.
The Caribbean monk seal is the eighth listed endangered species, and it is now found in Florida, Puerto Rico and the Virgin Islands. In June 2008 it was proposed that this animal be removed from the endangered species list. The Guadalupe fur seal is the ninth, and is found in California. Its status has been upgraded to threatened from endangered since 1967. Finally, the Florida manatee is the 10th species listed, and is found in Florida and Georgia. As of January 2010, the species is still endangered, with a population of just 5,076.