Fostering dogs involves caring on a temporary basis for puppies and dogs who for whatever reason cannot be housed with their owners, shelters or breed rescue organizations. Many shelters now have formal fostering programs for dogs who are too young, unhealthy or have behavioral issues and therefore have to be housed with a foster family or face euthanasia. The book also covers informal fostering situations when families move or have some disruption and a friend or relative agrees to care for the dog temporarily.