yes it's same with my 3 cats, too. Their head turn direction to door then we knew straight way that we have visitors few seconds before flash lighting comes.
My cats know we are deaf. They jumped on our bed to wake us up at spot time everyday including weekends to remind us for feed them......
Do you give cats milk? If yes, that's why cat litter is smelly... I gave them water... cream once a week is Sunday...
I don't declaw all of my cats. My personally opinion that it's cruel to declaw cats. It likely to chop fingertips. I educate my cats well like what I educate my boys as well.
i never give my cats milk cuz it make them having "wet" business oh yah lol my cat knew that i am deaf too when i sit and do something he wud put his paw and tap on me on my arm then i wud look down and pick him up he do that alot ^^ i think it is so cute lol