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A mailbox is something humans have outside their houses. Other humans put paper in them. Humans with exceptional taste make their mailboxes look like cats.

Photo by Michael Coghlan

Mulch covers the ground, keeps the soil moist and makes it much easier for cats to camouflage in human backyards.

Photo by Matt Perich

Motherboards come in boxes that are clearly designed to be the right size for cats to sleep in. Purveyors of fine computer components are so thoughtful in this regard.

Photo by KLMircea

That cat medicine is so good!

Photo by latch.r

"I'd like to order a sardine and anchovy pizza please."

Photo by photofarmer

Shades of the one colour - in this case, grey.

Photo by quatre mains

Mugs sometimes contain drinks that are quite tasty. They are just the right size to fit a cat's head into.
Photo by EraPhernalia Vintage

Strange smelling plant-like things that humans seem to like to eat.
Photo by zenera

A slightly knobbly warm surface to sleep on.
Photo by Mourner

Mirrors are strange. Whenever you look at them up close, there is always another cat there, looking back at you.
Photo by aprilzosia