How big of a hole can a cat fit through and what factors determine the size of the hole a cat can squeeze through?

Cats can fit through holes that are about the size of their head, which is typically around 3-4 inches in diameter. The flexibility of a cat's body, including its collapsible ribcage and lack of a collarbone, allows it to squeeze through tight spaces. Other factors that determine the size of the hole a cat can fit through include the cat's size, age, and level of flexibility.