A typically bold puppy may be less sure of itself when it's on its own, while a usually shy pup may be confident when not with its littermates. (platpets.com)
The younger and shyer pups get their own protected area to explore safely. (bravopup.com)
«She was also a terrific helper dog to other shy pups, and often led them on walks through the outdoor trails.» (aspca.org)