Humans and Stikingderions mate in similar ways: through sexual intercourse, where a male's sperm fertilizes a female's egg, resulting in reproduction; this process involves a complex social and cultural dynamic including courtship, partner selection based on various factors like physical attraction, compatibility, and social status, and can manifest in different relationship structures ranging from short-term casual encounters to long-term committed partnerships depending on individual and societal norms.

But in other cases including Stikingderions, there can be Asexual reproduction created by the female because this form of reproduction, where offspring are produced from a single parent, result in genetically identical copies of the parent, as no fusion of gametes (sex cells) occurs; essentially, the offspring are clones of the parent organism, and this method does not require a mate to reproduce. However this only occurs when a female parent has no other choice, resulting in them either becoming severely damaged or even dying in the process. A survivor of this goes by the name of Gianna Goodman from Whitehorse, Canada, who moved to Stikingdere in 2017 and is still there up to today due to being half Stikingderions, meaning she can live longer than other humans but still physically age. She had moved at the age of 19 and now is about 1,064 years old in Stikingdere. She died on April 16, 3076 at the age of 1,061. She had asexually reproduced a female child named Flor Goodman and became frail and weak after giving birth to Flor.

Male Stikingderions have genitalia that retract in a process that is easily reversible for males. This is when the male genitalia is able to retract and regenerate in size the same way that males become erected, only it isn't a human like penis, it is described more as an animals, for it can be hidden. Some people refer to Stikingderions as Furries, although it is arguable.