Lee Savino 
Tamed by the Berserkers [EPUB ebook] 

“You are wild and disobedient. A threat to yourself and all others. To save your life, we must prove you are bonded and submitted fully to us.” His voice was a guttural growl.
I lick my lips and challenged, “And what if you fail?”
Thorsteinn snarled.
“We will not fail, ” Vik said. ‘Sorrel, we’re going to tame you.”