Pomeranians suffer a lot from open fontanels, slipping patellas, heart murmurs, etc.. (breedingbusiness.com)
Its major health problems include patellar luxation (loose kneecaps), some eye problems, and occasionally a soft spot or fontanel on the skull. (canismajor.com)
Even more important, a sunken fontanel could be a sign of dehydration, a serious condition that requires immediate medical assistance. (babycenter.com)