DHEA is produced in the adrenal cortex from cholesterol, androstenedione is produced in the testes, adrenal cortex, and the ovaries (in women, obviously). The most well-known androgen is testosterone, which is responsible for developing the secondary sex characteristics in men. Another well-known androgen is dihydrotestosterone (known as DHT). The presence of DHT in the developing embryo is what causes the formation of the penis, scrotum, and prostate. During mid-life, DHT is responsible for male balding, prostate growth, and sebaceous gland (common around the face and head) activity.
The Pokemon Swinub evolves into Piloswine at level 33. Swinub is an Ice/Ground type Pokemon, which was introduced in Generation 2.
Nincada's evolution is a very unusual one. If you reach level 20, Nincada will evolve into Ninjask. However, if you reach level 20, have an extra slot in your party, and have a Poke Ball in your bag (must be an average Poke Ball, not a Great Ball or Ultra Ball), then you will get both a Ninjask and Shedinja. That IVs and EVs from Nincada will transfer over to both evolutions.