Can you tell the age of a lion by the color of its mane?

The color of a lion's mane is not a reliable indicator of its age. Instead, the color of a lion's mane is related to its testosterone levels. Male lions with higher levels of testosterone tend to have darker and fuller manes, while those with lower levels may have shorter or lighter-colored manes. However, it is important to note that the amount of testosterone a lion produces is not necessarily related to its age.

Other factors, such as genetics and environmental conditions, can also affect the color and size of a lion's mane. For example, lions living in cooler climates may have longer and fuller manes, while those living in hotter climates may have shorter and sparser manes.