Cats age in a more accelerated manner than humans. The first year of a cat’s life is equivalent to 15 human years. The article includes a chart comparing human years to cat years.
Cats mature rapidly in the first few years of their lives, then their growth and maturity slows down.” – Mikel Maria Delgado
Source: Forbes Advisor, September 27, 2023. Link. The average lifespan of a cat is 12 to 15 years and are considered seniors once they’ve reached the age of 10. They can live into their teens or 20’s depending on their life quality.