
Hi
I always have my girls scanned around 5 weeks. I never go with numbers seen, only ever use it to confirm pregnancy. I did have one girl when scanned showed 5 pups (1 bigger than the other 4) she went on to have a singleton pup. The scanners I use depend on there availability, Archie (approx 120 mile round trip) is difficult to get hold of sometimes but is always spot on, one girl had 3 healthy pups an one mumified as he saw in the scan. The local Agricultural College I've given up using, have now found a chap 5 mins from my front door who scanned my last girl and was spot on.
Just a note the agri college is the only one to lie the girls on there backs, shave there belly and paint oil on with a brush, even though they are Papillons and are used to being on your lap having a belly rub they used to get stressed being scanned this way.