The exact reason for the decline in the 1950s is unknown as well. The Fish & Wildlife Services states that the eagles declined in the 1950s because of DDT. The problem with that statement is the fact that the bald eagle was recovering for many years before the nation banned DDT.
Elephants in the wild live to a range of 50 to 70 years. For well kept and fed animals in captivity, the oldest recorded is 82 years.
1 Elephants can walk up to 120 miles per day, although the average is only between 15 and 16 miles. They walk about five and a half miles per hour and can run at speeds up to 40 miles per hour.  The elephantâs closest relatives are the hyrax, the aardvark and the manatee.