Revek's bed.

According to information compiled by the Greenberg Center at Johns Hopkins Medical Center and by the late Lee Kitchens, a past president of LPA, the frequency of occurrence of the most common types of dwarfism is as follows:

Achondroplasia (one per 26,000 to 40,000 births)
SED (one per 95,000 births)
Diastrophic dysplasia (one per 110,000 births)

Since there seems to be 812,129 individuals in Ottawa, that would make the total amount of dwarves in Ottawa to be about 36. That means that Revek's refusal to get himself a lower box-spring for his bed has reduced his potential mating pool by near 40 people. (Notice I did not divide 36 by 2 to single out females....)