How old does a cat have to be eat adult food?

Generally, cats should transition to adult food between 12 and 18 months of age. However, this can vary depending on the cat's breed and size.

Here's a more detailed breakdown:

* Small breed cats: May be ready for adult food as early as 12 months.

* Large breed cats: May need kitten food until they reach 18 months or even 2 years old.

* Indoor cats: Tend to mature slower and may benefit from kitten food for longer.

* Outdoor cats: May reach maturity faster and can transition to adult food earlier.

It's always best to consult with your veterinarian for personalized advice on your cat's dietary needs. They can assess your cat's individual growth and development and recommend the most appropriate food for their age and activity level.