I DO NOT TAKE CREDIT FOR THIS IMAGE!
im only posting! i repeat i do not take credit for this IMAGE!
well then after thats cleared. I will explain the image!
So the brown line is just normal line, meaning that if you go through this evolution route, it will almost likely to go to that next evolution.
The ones that have * beside the name means that sometimes when you are evolving your pet, it MIGHT turn to that evolution.
The Blue and red lines is just in different colour to make the evolution chart more clearly! anyways, if you have any problem just post! and i will reply to you guys ASAP!