Pachyderm Epidemic/Herd Mentality

S1 E6: Eugene is thrilled to hear that the Loyal Order of Rogue Elephants has chosend Freeborn as the location for its next convention. But when his old buddy Ralph drops by for an early visit, trouble brews. This jungle aint big enough for two bullies.//In their eagerness to win the annual Better Herds and Flocks competition, the herd dumps Gnu for a more resilient leader: Eugene.