They have been found to gather at common food sources with other unrelated animals without showing signs of territorial defense. Wallabia bicolor have no known natural enemies. They are able to hop bipedally on their hindfeet while holding their heads close to the ground. They may also use their forefeet to move around on all fours. Swamp wallabies are strictly herbivorous. Their diet consists of soft plants such as buds, ferns, leaves, shrubs, and grasses. They have been known to eat bark, shoots from needle-leaf trees, and plants that can be poisonous to domesticated animals. Wallabia bicolor are browsers and use their reduced forelimbs to manipulate their food.