I'd just like to say, that I think people are talking about 2 different things here. If you're talking about a PROFESSIONAL, responsible breeder, like say Razor's Edge... then yes, I THINK once a year is fine. And I personally wouldn't do it MORE than once per year, as I feel there are too many dogs out there anyway, but that's JMO. That's what I tried to convey in my post. But I think most people on here are assuming you mean just any random person deciding to breed. Like if I suddenly decided to breed my 2 dogs (they are fixed, but for the sake of argument, let's pretend they're not)... then yes, once a year or ANY breeding at all would be too many, and would make me a BYB. People are debating over 2 very different things.