Why do animals have different age groups ?

Question: Why do animals have different age groups ?
- Keywords:
  age,
  animals,
  groups
Asked by anon-357644 to ilma on 15 Mar 2023.
- ilma qonaah answered on 15 Mar 2023:
  
  i’m not sure what you mean. animals have different lifespan to humans, for example cats reach maturity at around 2.5 years old, in human age that would be around 18 years old