Cats do not have a collarbone, which allows them to fit through any opening the size of their head.
Cats are great contortionists.
Cats' hearing is much more sensitive than that of humans and dogs. Cats can't see in total darkness, but their 'night vision' is excellent. A cats field of vision is about 185 degrees. Cats take between 20-40 breaths per minute. F. A domestic cat can run at speeds of about 31 miles per hour.