An OLD Simba. Manes get darker as they grow older. How come that doesn't happen w/us? Lions live until about 15 yrs. old, and our guide estimated his age at 13. He was lying right in the middle of the road and no one could pass him. Eventually, about 10 safari trucks came around, everyone started "shooting" (w/their cameras), and he didn't budge for about 1/2 hr.