Maybe it's called 'Ducky Orange'. Different cartoons might give it unique names based on the story and character traits. For example, if the duck is adventurous, it could be named something like 'Adventurous Orange Duck'.
Well, there's 'Pumpkin'. It's a cute and fitting name for an orange cartoon cat. It kind of gives off that warm and colorful image. Also, 'Flame' is a possibility as it implies the fiery color of the cat.
I think names like 'Tangerine' or 'Blaze' would be great. 'Tangerine' for the obvious orange fruit connection and 'Blaze' to suggest the cat's energetic and vibrant personality.