My cat Fella sleeps at the foot of my bed every night. He also naps there, which is where my sewing machine is. Sometimes when I am sewing, I hear him not really snoring, but this kind of a whimper, and then he starts making a sound as though he is sipping water through his lips. And he is dead to the world in lala land when he does this sipping sound, almost like a kitten nursing. But he is an older cat, nine years young!!
Then there is Peaches, the orangie in the window on my avatar. He is 6 years old, but thinks he is still a kitten. He likes for us to cuddle and hold him, and then he puts his nose and mouth under our armpit and goes into the movements with his paws like he is still nursing on his mama. When all done, our shirt is soaked with kitty slobber. Only in our backyard, gardening clothes do we allow him to be a baby kitten!!