Epidural anesthesia is a regional anesthesia that blocks pain in a particular region of the body. The goal of an epidural is to provide analgesia, or pain relief, rather than anesthesia, which leads to total lack of feeling. Epidurals block the nerve impulses from the lower spinal segments.
Tigers live for about 25 years both in captivity and in the wild. 42. Cats in general have been found to have a better memory than any other animal, including humans, being several hundred times better than dogs and dozens of times better than primates.
The life-span of tiger sharks in the wild is considered to be 27 years in average, even though some may live up to 50 years of age. As with other species, tiger sharks in captivity do not live as extensive as in wildlife reaching only 17 to 20 years. Some experts presume that the lifespan of the Great White Sharks is approximately 30 years (Levine, 1988) but other research indicates that they can reach up to 40 years.