Why didn't a girl Pikachu have a heart-shaped tail in LeafGreen?

Question

In Viridian Forest I found a Pikachu and it was female, yet it had no heart tail. Is there a reason?

Answer 1

Pokemon did not have gender differences until Gen IV.

Comments

Is too.I had a female ivesaur in the beginning and wild pokemon had genders.

---

He means pokemon of different genders didn't have different looks.

---

ok i get what you mean