Therianthrope



 are a species of shape-shifters; a human subspecies which are a Class Nine Hyper-Accelerated Protean (HAP) life form. They are a race of abnormals to which Henry Foss belongs. The most common type of a therianthrope is a werewolf / werewolves which are also commonly referred to as lycanthropes or lycans in other cultures, such as in England.

Reproduction
A female lycan's body will normally go into a cellular 'lock-down' mode (where her cells are unable to shift) to protect the fetus, because the transformation also changes a lycan's internal organs. The natural gestation period of a Lycan is ten and a half months, slightly longer than a human's nine months.

In Season 4 it is revealed there are fears that the Lycan species is slowly dying out due to the lack of newborns. When Erika falls pregnant, Magnus discovers that the drugs that she and the clan were using to suppress their transformation also lowered their fertility rate. Now that she has come off the drugs, the chances of pregnancy have improved, though it is risky: her body is creating extra hormones as a defense after taking the medication for so long, something her body has trouble dealing with. Magnus suggests a procedure that will slow the embryo's growth, so that the hormones are released at a slower rate. This baby will be the first known Lycan to be born since the death of Erika's parents.