Whelping box
Encyclopedia
A whelping box is designed to protect puppies
Puppy
A puppy is a juvenile dog. Some puppies may weigh , while larger ones can weigh up to . All healthy puppies grow quickly after birth. A puppy's coat color may change as the puppy grows older, as is commonly seen in breeds such as the Yorkshire Terrier...

 during birth (whelping) and early life by keeping them safely contained, protected from cold, and safe from the danger of crushing or smothering by the mother.

Whelping boxes vary from improvised cardboard boxes to purpose built equipment, typically made of plywood. The sides of the box are designed to be high enough to safely contain the puppies, yet low enough to allow the mother to enter and leave comfortably, with consideration given to her protruding mammary glands. The bottom of the box may be lined with specially designed "whelping pads," or layers of newspaper (or fabric) to provide insulation from cold floors and to absorb fluids.

A low railing, termed a guard-rail or bumper-rail, may be present around the inside of the box. This is to protect puppies from being crushed or smothered by the mother should she roll over during birthing or while asleep. This is considered especially important with larger dog breeds.
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