In rec.pets.cats.health+behav oldhickory wrote:

we have one that does not meow, also. She makes a squeaking, sort of a
peeping noise. Not common but not a worry. Sometimes amusing.

If your cat has *never* meowed, then that's normal for her. But for
a cat to stop suddenly for no apparent reason *is* a cause for concern,
IMO. Any sudden change in normal behavior should be checked out. It
might be the only indication you get that something's not right.

Joyce