Heretic: A Military Archaeological Space Adventure (The Zenophobia Saga Book 1) by Craig Martelle & Brad R. Torgersen

Where did the Zenomorphs come from?

Tigers, wolves, gorillas, and bears. Four planets at each other’s throats. But they have too much in common for it to be a fluke. Just mentioning the possibility that they descended from the same place gets one labeled as a Heretic.

When Sankar comes into possession of a religious text that hints at where they came from, he seizes the opportunity and makes it his mission to find the Truth.

But he needs help from all the races. With a stolen warship and a ragtag band, Sankar sets out to answer the question that is illegal to ask.