Purring

[G535]

Finnigan purred normally when he was a kitten but now I have to put my ear to his side to hear him so I guess all cats are different.

[dab_20]

I agree, the kitten is probably just purring very quitely. My cat, Oreo, sounds like a motor boat it's so loud!

[FuzzyBunnyChainsaw]

My cat was pretty feral when I found her and would NEVER purr as far as I could tell. As she got older and began to trust me, the purring got louder and now at 7 months old her purr is audible from 3 feet away! Put a finger on the kitten's throat the next time you are about to provide a meal.. that's a sure way to find out.
I almost forgot.. she was 6 weeks old when I got her!