I don't do x-rays or an ultra-sound unless I think there might be an issue. And since lots of females gain weight and sometimes have other signs of pregnancy, it is typical not to know until the due date, or after the due date.
This is nature. Dogs seem to have litters when bred at a higher rate than humans get pregnant, but it simply isn't 100% And, the health of my girls and the pups is more important than whether buyers know today or 1 week earlier. Getting her x-rayed just so potential buyers will know 9 weeks prior to their bringing home a puppy instead of 8 weeks prior to bringing home a puppy is simply a no-brainer to me.
The amount of x-ray the bitch undergoes for a litter of puppies is very small. But if you add hip x-rays, and maybe x-raying an injury, and then x-raying the bitch prior to having each litter, and every false pregnancy, and possibly after to to ensure no retained puppy, well, it can add up, and it is really un-necessary.
Jenna, RN CGC & Babs, CD RA CGC HIC
Heidi, RA CGC
SG3 Odessa, SchH1, Kkl1, AD
Ninja, RN CGC & Milla, RN CGC
Joy, Star Puppy, RN CGC
Dolly CGC & Bear CGC