They leave me out, make fun of me and threatning me?

[I have a dog]

I understand what you feel. These people are just plain nasty and jealous creatures. They wouldn't make good friends and they are those who are like when they need something , they will treat you nicely but when they don't need something from you, they will probably betray you. If i were you, i'd stay away from them. Those girls are female dogs! Don't tell them any of your secrets. They will be sure to leak it out. If they go any further than that , etc. physically hurting you or bullying you, ignore them. Be brave, once they know that it's no use, they will leave you alone .