Poor Bobby, a Bengal crossbreed, is thought to have climbed into the machine for a little snooze before his owner, Lisa Keefe, from the Meadows, Nottinghamshire, decided to give her whites a wash.
But she'd only just switched on the machine when she heard a loud thudding noise - and realised her beloved pet must be inside!
Recalling the incident, Lisa, 47, said: "Bobby has been known to climb into the washing machine so I always try to keep the door shut and keep him away when adding a new load, and check inside before turning it on."
"On this occasion I had actually taken him outside, but he must have snuck back inside when my back was turned and hidden under the duvet."
The nine-month-old cat was taken to Nottingham Pet Hospital on the verge of collapse and needed IV fluids to treat shock, but fortunately survived.
Bobby has now been nominated for a PDSA Pet Survivor award after the accident in June, with previous winners including Staffie Ziggy, of Hertfordshire, who was shot by a crossbow and cat Robbie, from Croydon, who suffered extensive burns following a fire.
For exclusive competitions and amazing prizes visit Reveal's Facebook page NOW!