Owen P. Jenkins 
Advances in Animal Science and Zoology. Volume 21 

This volume contains ten chapters that detail advances in animal science and zoology. Chapter One focuses on primary intracranial tumors in dogs, highlighting the three most prevalent types: meningiomas, gliomas, and choroid plexus tumors. Chapter Two aims to review the complex subject of vitamin A supplies for cattle. Chapter Three reveals significant correlations between underlying geology and the abundance of some species of mammal, even when other factors such as soil type, climate and vegetation are held constant. Chapter Four compares the diets and diet quality of two adjacent Rocky Mountain bighorn sheep herds with dissimilar population trends in Rocky Mountain National Park, Colorado. Chapter Five discusses macrocyclic lactone-based tri-model therapy used to treat humpsore in cattle. Chapter Six summarizes research on the involvement of changes in intracellular c AMP concentrations in the fish and frog oocyte maturation-inducing pathway. Chapter Seven discusses natural law as a neglected resource in the discourse of animal rights. Chapter Eight studies the effect of urbanization on the Carabidae and Scarabaeidae families in Eskisehir Osmangazi University’s Meselik Campus and Meselik Forest gradient. Chapter Nine presents the morphological characteristics of female Haemonchus contortus. Lastly, Chapter Ten discusses animal liberation versus animal resistance.