The planet Alldoron has varying climates and terrain, and is home to several predator and prey species. The Wolther tooth, genetically engineered from black panthers, saber-toothed tigers, and wolves, lives and hunts in packs. It preys primarily on the slow sloth. The ecosystem is balanced by the Wolther tooth's breeding patterns and territorial behavior. Human colonization can be minimized by maintaining natural spaces and controlling the introduction of non-native species and livestock.