Yes =)
Cats purr when they are happy or feeling loved
Cats purr as a way to communicate, this usually means they're happy but sometimes a purring cat can mean a problem. You can usually tell if its a good purr or bad by when it starts purring, if you...
All domestic cats can purr (if I'm not mistaken). However, some cats do not purr at all, just like some cats never meow.
Probably. With some cats, when they breath it sounds like they a puring