Bacarau was initially enemy to the leader of the Pack of Rabbits at the time, Cassio, until they finally errupted into a fight with Cassio the victor, earning Bacarau's respect. Tensions lessoned after that and Bacarau inquired about Cassio's pack, being on the fringes for a while before eventually leaving his life as a lone wolf to join. His closeness to Cassio and respect for how he served his pack despite coming from an unlikely background while also being the pack stud inspired Bacarau and eventually earned him the title of stud when Cassio passed.