To feed your pet in Knight Online, follow these steps:
Visit the NPC Kate, where you initially acquired your pet (Kate is located in Moradon).
Right-click on your pet and select the "Familiar Random" button.
In the purchase window that appears, you will see three different types of food to feed your pet.
Leaves > Bread > Milk
These foods have varying levels of nourishment. In ascending order, it's recommended to choose bread if you have a high-level pet, although many players prefer leaves.
After summoning your pet, press the "P" key. You will see three tabs with your pet's information at the top. Click on the tab labeled "item."
Drag and drop the food you want to feed your pet into the designated area, then confirm the action in the prompt that appears.
Your pet will then consume the food.