What physical trait, resulting from the double coat structure, contributes to an optical illusion about the cat's size?

Answer

The double coat stands out slightly from the body

The way the double coat stands out slightly away from the body creates an optical illusion, making the cat appear more robust or larger than its actual fine-boned frame suggests.

What physical trait, resulting from the double coat structure, contributes to an optical illusion about the cat's size?
animalÇatbreedRussian Blue