My buddy arrowed a bear cub (he wanted a cub to mount) and momma bear was still around. He radio'd me and I went to his stand to help him out/scare momma away/maybe arrow momma. I get about 50 yards from him and I see the sow, she is pacing back and forth, ears tucked way back. To make a real long story much shorter, she mock charged me twice. After the second charge I flung an arrow at her (in self defense) and it hit a tree beside her and she got scared and bailed out. My buddy climbed down, grabbed the cub and we booked for the truck watching our back trail the whole way. Pretty good adrenaline rush.