In the evenings, we gather the puppies into this bin and take them to get weighed. The weights are recorded and each puppy is inspected before it goes back into the whelping box. With large litters, it's important to make sure that they are each getting enough to eat.
It's hard to get a clear picture of a puppy getting weighed. They wiggle a lot - especially when you take them away from their cozy, warm siblings! :)