These puppies miss out on important interactions that take place with other puppies in the litter. (canismajor.com)
Water puppies are also in danger of preventing other puppies in the litter being born. (breedingbusiness.com)
It is not uncommon for puppies to create packs for mutual defense against other puppies in the litter, or for puppies to engage in coordinated attacks on one or more individuals in the litter, resulting in injuries or even death. (samthedogtrainer.com)