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At what age does a cat become an Adult cat?

When does a kitten become an Adult cat?

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On average, the earliest a kitten should be considered an Adult cat is at 1 year old. For dietary purposes, kittens can start eating adult cat food, anywhere from 9-12 months. At 7 months, a kitten should have grown all it's cat teeth in.

Technically speaking, vets usually conclude that cats are Adult cats at 1 years old. So once a cat turns 1 yr you should switch from kitten food to regular adult cat food.

For comparison and reference, The Cat Bible, a book by Tracie Hotchner, provides the following Cat years to Human years comparison list:

  • 1-month-old kitten = 6-month-old human baby
  • 3-month-old kitten = 4-year-old child
  • 6-month-old kitten = 10 human years old
  • 8-month-old kitten = 15-year-old human
  • A 1-year-old cat has reached adulthood, the equivalent of 18 human years
  • 2 human years = 24 cat years
  • 4 human years = 35 cat years
  • 6 human years = 42 cat years
  • 8 human years = 50 cat years
  • 10 human years = 60 cat years
  • 12 human years = 70 cat years
  • 14 human years = 80 cat years
  • 16 human years = 84 cat years


At what age does a cat become an Senior cat?

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