1 Program Levels: Bachelor's, master's and doctorate. 2  Program Specializations: Options include ecology and wildlife sciences. 3  Program Length: A bachelor's normally takes 4 years.  Other Requirements: At the graduate level, practicums and thesis projects must be completed for graduation.
BananaStock/BananaStock/Getty Images. Lizards puff their necks for a number of reasons. Whether they're trying to get attention from you or a or to intimidate another lizard, it's a normal part of lizard behavior. Learning why lizards puff their necks can help you better care for your pet.
A snake may appear threatening when it flicks its tongue out, but it's simply trying to get a better sense of its surroundings by tasting the air. To compensate for their poor eyesight and limited hearing, most snakes have an excellent sense of smell. Although snakes have nostrils, they also use their tongues to pick up the scent of nearby prey or predators. When a snake flicks its tongue, it collects odors that are present in miniscule moisture particles floating through the air. The snake darts the tongue into its Jacobson's organ, which is located inside the roof of the snake's mouth.