These photographs are from a visual essay called 'One Cat, Three Lives', created by Hiroyuki Ito and published in the New York Times.
They're pictures of Meeno, a cat who was born on July 1, 1995, the same day that Hiroyuki became ill in Rio de Janeiro, and had to give up on his dream of becoming a professional documentary photographer.
Hiroyuki moved to Brooklyn, and his girlfriend at the time bought him something to cheer him up: a new kitten.
The photo essay tells the story of Meeno's life, and how it intertwined with Hiroyuki's. It traces the passage of many years, as relationships end, people move away, and eventually, Meeno gets sick.
We're not going to tell you any more than that. If you have a few minutes to spare, visit the Times' Lens blog, and view the full photo series in full screen mode. It's well worth a look.
And as we said in the title: you might need a couple of tissues by the end. It's really dusty in here.