Food & NutritionIs it safe to feed adult cats Royal Canin kitten food long-term?
Thanks for visiting Petco Pet Education Center, formerly Petcoach. You may absolutely feed them Royal Canin kitten food as long as they are under 1 year of age. If they are not kittens then it’s not a good idea to feed them kitten food because this has more calories than they need and will cause them to become overweight and at high risk of developing diabetes and arthritis issues.
You can try feeding them a similar adult food with the same protein in it as the kitten food. Check your local store and online store for more protein (beef, chicken, turkey, salmon, etc) options.
I hope this helps! Best wishes and take care.
Updated on September 24th, 2025