According to the video description, this cat is deaf and couldn't hear her owner in the house. She got adorably startled when she finally noticed that he was right behind her.
Corduroy, born on August 1st, 1989, holds the Guinness World Record for being the oldest cat alive. He loves mice, sharp cheddar and simply being a cat.
Even at 26 he keeps a busy schedule roaming his owner's 160-acre ranch in Oregon. Somehow he still finds the time to nap regularly.
Via Guinness World Records