I'm playing White 2 and I want to know how I can raise my Zweilious's Special Attack IVs.
You can mess with the IV's too change the Hidden Power type.
^This website should tell you all about IV breeding.
Hope I helped!
To add, they cannot be raised normally, it has to be by breeding.
No IV's can't be changed.
you cant change the ivs of a Pokemon you already have but you can improve them through breeding