The aging process varies among different species of organisms due to their unique physiological and genetic characteristics. In general, aging is a complex process influenced by a combination of genetic, environmental, and lifestyle factors. Some species, like certain turtles and whales, exhibit negligible senescence, meaning they do not show signs of aging or age-related decline for most of their lives. Other species, like humans and many mammals, experience a gradual decline in physiological function over time, leading to age-related diseases and ultimately death. The mechanisms of aging can include DNA damage, telomere shortening, cellular senescence, and changes in gene expression. Overall, the aging process is a multifaceted phenomenon that is still not fully understood across different species.
