We usually think of the wildebeest (gnu) in the context of "the Great Migration" of the Serengeti. However, mixed in these traveling mega-herds are many other species, including zebras.
The relationship between the wildebeest and the zebra is most interesting. These two animals crop grasses differently, so their grazing is complementary. They also perceive their world differently (helpful for avoiding predators!); the wildebeest's keen sense of smell complements the zebra's keen senses of sight and sound.
Working together, these animals do better than working alone. There's a sermon in there somewhere.