The Túngara frog is a tropical species of frog, upon which many mate choice studies have been performed. The male Túngara frog has a characteristic ‘whine-chuck’ mating call
Introduction In animals all waste products must be excreted from the body in some manner. The urinary system is involved in the excretion of nitrogenous waste products such
Introduction The method of digestion which an animal uses depends on its diet i.e. carnivore, herbivore or omnivore. For example not all mammals are carnivores (e.g. dogs and
Respiration is the process of obtaining sufficient oxygen from an organism’s environment to support its cellular metabolic requirements. Respiration is not just the mechanical process of breathing -