This resulted in a lot of stress and strain for not only the pup but the family. (second-opinion-doc.com)
Table 5 shows the slow and steady increase in the use of limited registrations for only pups actually registered. (breedingbetterdogs.com)
In 24 traps containing only pups, they found killed mice and other prey items outside the traps, apparently left by the parents for their young. (nps.gov)