Herpetology
"The science or study of reptiles and amphibians."
Reptile
"An air-breathing, cold-blooded, usually egg-laying vertebrate, such as the crocodile,
tortoise, snake, or lizard, with an outer covering of scales or plates and a bony skeleton."
Amphibian
"A cold-blooded vertebrate that spends some time on land but must breed
and develop into an adult in water."
Vertebrate
"An animal with a segmented spinal column and a well-developed brain, such
as a mammal, bird, reptile, amphibian, or fish."
Invertebrate
"Animal without a backbone, such as an insect or worm that does not have a
backbone."
Crustacean
"An invertebrate animal with several pairs of joined legs, a hard
protective outer shell, two pairs of antennae, and eyes at the ends of stalks."