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Cat on a wall (by Marite2007)
Giant monster cat (by www.guigo.eu)
Cat Kisses (by Memories by Jules)
Cat (by ►CubaGallery)

if you like catswithdumbfaces you'll totally love dogswithdumbfaces

(by maskedmario)
Close-up BUB
When my cat Kato was a kitten he had a really awkward “milk mustache marking”. Not sure if this qualifies as ‘dumb’ or not but idk.
Chibusa, a.k.a Caterpiller 
If you ever wondered… (by wacamerabuff)