Aggression • Aggressive • Approach • Based • Behavioral • Beneficial • Benefit • Benefits • Between • Birds • Cats • Causes • Chance • Commensalism • Competitors • Deer • Differ • Distant • Does • Dogs • Examples • Form • Harmed • Harms • Helped • Hosts • Live • Luck • Manipulation • May • More • Mutualism • Mutually • Nature • Neither • Nor • Organism • Own • Parasites • Predators • Random • Relationships • Resources • Sea • Share • Species • Strategy • Their • They • Wolves