This volume includes seven chapters, each of which detail recent advancements in animal science and zoology. Chapter One reviews the available literature on the behavioral aspects of the pest Bemisia tabaci. Chapter Two describes the similarities between canine and human lymphoma. Chapter Three discusses the diversity, threats, and behavior of freshwater fish with particular reference to Indonesia. Chapter Four studies endocrine and enzymatic functions on complex behavior of freshwater fishes. Chapter Five deals with the behavior of fish reproduction and examines the effects of exposure to endocrine disruptors on fish behavior. Chapter Six focuses on lower urinary tract disease in guinea pigs. Finally, Chapter Seven includes a study of helminth fauna found in 26 specimens of Callithrix jacchus and Callithrix penicillate.