13.1Crocodilians are not recommended as pets. Some species that may be encountered by veterinary surgeons include: (a) American alligator and (b) spectacled caiman.
13.4Adaptations to an aquatic life. Crocodilian nares are kept tightly closed (a) except during inhalation and exhalation (b). (c) The openings to the ears are covered by the auricular flap. (d) The opaque third eyelid covers the eye during diving.
13.5The oral cavity of an adult American alligator. Note: the large sharp white teeth; the gular flap at the back of the throat; the large relatively immobile tongue; and the wide powerful gape.
13.8Restraint. (a) Holding a juvenile saltwater crocodile, with jaws taped. (Courtesy of C. Johnson-Delaney.) (b) Medium to large crocodilians may be restrained on boards with straps to allow transport and minor diagnostic procedures.
13.11Blood collection from the supravertebral sinus. After disinfecting the skin, the depression behind the skull is palpated (a) and the needle inserted in the midline (b) and advanced until blood is aspirated.