From the RC website:
Feeding guidelines are provided for each Royal Canin diet, based on the age, size and/or weight of the pet. These indicate the amount to feed your pet each day. It’s recommended to divide this into two or three meals throughout the day.
Use an appropriate weighing scale and/or the specific measuring cup as annotated on the bag. Always ensure that you measure food very carefully. A small measuring variation when feeding cats and small dogs can significantly increase their calorie intake.
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Here is a link to their feeding guide:
https://www.royalcanin.com/us/dogs/p...n-gel-dog-food