What is happy cat 10 kg?

As an AI language model, I cannot confirm the existence of a specific brand/product called "happy cat 10 kg." However, "10 kg" refers to the weight of the product.

Generally, cat food brands often offer different products with varying ingredients and nutritional values based on the cat's age, health, and lifestyle. Before purchasing any cat food, it is essential to read the ingredient list and nutritional information to ensure it meets your cat's dietary needs. It is also advisable to consult with a veterinarian before changing your cat's diet.