Characteristics• Cold-blooded• Use lungs to breathe air• Boney skeleton• Scales cover the body• 3 body types – Long bodies with defined tails (crocs. and lizards) – Long bodies that taper into tails (snakes) – Short-thick bodies encased in shells (turtles)
Characteristics• Three chambered heart with a septum.• Greatly reduced metabolic rate so not much heat is produced within the body
Class: Reptilia• There are about 6,500 species of reptiles.• skin is covered with waterproof scales.• Scales attach below the epidermis.
Class: Reptilia• A heart with three chambers and a septum that partially divided ventricle.• This limits mixing of oxygenated and deoxygenated blood in the heart.
Class: Reptilia• Most lay eggs that are covered with a soft shell or give birth to live young.• All reptiles are cold blooded.