Emma in the window. She loves the summer, and I love watching her love the summer.
Cat skin has sebaceous glands that secrete sebum, a greasy substance. When stressed, the glands shift into overdrive. This makes perfect sense. Many of the calls I receive come from homes in which the owner has either moved recently, just given birth or travels often. These can be high-stress situations for some cats.
Those glands must be pouring out oil when the vacuum cleaner monster invades the living room!