An enemy porcupine girl makes her transformation in chapter 3 here:
http://www.tenmanga.com/chapter/Kill.../385165-8.html
http://www.tenmanga.com/chapter/Kill.../385165-9.html
http://www.tenmanga.com/chapter/Kill...385165-10.html
Single page showing her form:
http://www.tenmanga.com/chapter/Kill...385165-11.html
Cheetah girl makes her transformation in chapter 5:
http://www.tenmanga.com/chapter/Kill...387112-13.html
Her form right here:
http://www.tenmanga.com/chapter/Kill...387112-14.html
You know it kinda sucks that they don't have a bit of a muzzle as well when they change into these forms while the guys almost look completely like an animal when they change. Oh well. I'm just hoping the free-for-all in the next latest chapters will show some girls who follow the guys' examples.