Creatures on their necks are called Byruka. Mating seasons are Summer and winter. Can change physical forms to blend in with the planet's creatures. Can mate with anything and anyone of any gender, even genderless. They require a high carb and protein diet. They can't go long without oxygen due to them having a high oxygen requirement, but don't need as much iron unlike humans making their blood blue. They are an invasive species. They can have up to 200 babies at once though the survival rate of babies are low just like the ones giving birth. There are several ways for them to have babies, but I won't say em unless someone wants to know. Average height and weight of a female are 5'10-6'2 and 250-280lb. Average height and weight of a male are 6'2-6'7 and 310-360lb. Males tend to be more calm and quiet while females tend to be more loud and aggressive. They can't live in extremely cold or hot climates. Are a pretty non-aggressive species as long as you are not aggressive towards them.