Health

The Pomeranian is significantly predisposed to alopecia X with Pomeranians comprising 79.3% of the case load of a referral clinic in Japan and 26.5% of an endocrine alopecia case load in the US.

A study in England found the prevalence patellar luxation to be 6.5% in the Pomeranian, the highest prevalence out of all breeds in the study. A USA study found an odds ratio of 18.6 compared to crossbreeds. Another study in the US found the Pomeranian to make up 9.3% of the caseload. In Thailand prevalence was found as high as 75% in one study and a 28.9% caseload in another.

A study in the US found a prevalence of 0.29% for congenital portosystemic shunt, an odds ratio of 5.6 compared to mixed-breed dogs.

A Japanese study found the Pomeranian to be significantly predisposed to gallbladder mucocoele with an odds ratio of 7.74 compared to the overall referral population.

In case studies of atlantoaxial subluxation the Pomeranian was found to comprise 10.6% of cases in Japan, 46.7% in the UK, and 10.5% and 6.5% in the US.

Merle-colored dogs may have mild to severe deafness, blindness, increased intraocular pressure, ametropia, microphthalmia, and colobomas. Merle dogs born from parents who are also both merles may additionally have abnormalities of the skeletal, cardiac and reproductive systems.

In case studies of referral clinics for tracheal collapse the Pomeranian made up 6%, 13.5%, and 16.7% of three referral caseloads in the US and 11.9% of a referral caseload in South Korea. In an Australian study on a referral population the Pomeranian had a 9.3% prevalence.

Another common disorder in male Pomeranians is cryptorchidism. This is when either one or both of the testicles do not descend into the scrotum. It is treated through surgical removal of the retained testicle.

In China, 54.6% of Pomeranians attending veterinary clinics were obese.