I remember my mother reading aloud to us a chapter book (in the early 1960s) about a group of children called Ragamuffins (maybe just four children). They meet a talking cat named Pouffon (that is how she pronounced the name; I don’t know how it is spelled). Each time the cat speaks though, it loses one of it’s special whiskers, or it’s whiskers changes back to a normal color. It was very sad when the cat spoke for the last time, to help the children, since the cat only had one special whisker left. I think the book is probably a literary award winning book, since my mother made sure we read all of the Newberry and Caldecott Award winning books. I hope it is still in print. I think the book had a navy blue cover, (hardback), and maybe a line drawing at the start of each chapter. It may have been published much earlier than the 60s. It was probably a library book, and was pretty well-worn then.
Thank you so much for your help!