Tuatara — The tuatara is an amniote of the family Sphenodontidae, endemic to New Zealand. The two species of tuatara are the only surviving members of the Sphenodontians who flourished around 200 million years ago, and are in the genus Sphenodon. Tuatara resemble lizards, but are equally related to lizards and snakes, both of which are classified as Squamata, the …

Horned Toad — Horned lizards (Phrynosoma) are a genus of the Phrynosomatidae family of lizards. The horned lizard is popularly called a “horned toad,” “horny toad”, or “horned frog,” but it is neither a toad nor a frog. The popular names come from the lizard’s rounded body and blunt snout, which give it a decidedly toad-like or frog-like appearance. (Phrynosoma …

Gecko — Geckos are small to average sized lizards belonging to the family Gekkonidae which are found in warm climates throughout the world. Geckos are unique among lizards in their vocalizations, making chirping sounds in social interactions with other geckos. There are 1,196 different species of geckos. The name stems from the Malay word gekoq, imitative of its cry. Geckos …

Teju — Tupinambis is a lizard genus which belongs to the family of Teiidae. These large, South American lizards are commonly referred to as tegus; Tupinambis merianae (Argentine Black and White Tegu), Tupinambis rufescens (Red Tegu), and Tupinambis teguixin (Colombian Black and White Tegu, Gold Tegu, or Common Tegu) are all common in the pet trade. Tegus are an escaped …

Tortoise — Tortoises or land turtles are land-dwelling reptiles of the family of Testudinidae, order Testudines. Like their marine cousins, the sea turtles, tortoises are shielded from predators by a shell. The top part of the shell is the carapace, the underside is the plastron, and the two are connected by the bridge. The tortoise has both an endoskeleton and …

Snapping Turtle — The Snapping Turtle (Chelydra serpentina), more formally referred to as the Common Snapping Turtle when properly distinguished from its larger cousin the Alligator Snapping Turtle, is a large freshwater turtle of the family Chelydridae, and ranges from southeastern Canada south, west to the Rocky Mountains (and beyond, where introduced), throughout Mexico, and as far south as Ecuador. …

Komodo Dragon — The Komodo dragon (Varanus komodoensis), also known as the Komodo Monitor, Komodo Island Monitor, Ora (to the natives of Komodo), or simply Komodo, is a species of lizard which inhabits the islands of Komodo, Rinca, Flores, Gili Motang, and Gili Dasami in central Indonesia. A member of the monitor lizard family Varanidae, and the clade Toxicofera, the …

Gavial — The gharial (Gavialis gangeticus), sometimes called the Indian gharial or gavial, is one of two surviving members of the family Gavialidae, a long-established group of crocodile-like reptiles with long, narrow jaws. The gharial is the second-longest of all living crocodilians: a large male can approach 6 meters in length. Northern Indian subcontinent: Bhutan (almost extinct), Bangladesh (close to …

Girdle-tailed Lizard — Cordylidae is a family of mid-sized lizards that inhabits Madagascar and eastern Africa. The family is mostly terrestrial and insectivorous. They have rows of plated or spiny scales which cover their body. They are commonly known as the Spinytail lizards or Girdletailed lizards. Their name is derived from the rings of spiny scales that encircle the tail, …

Crocodile — A crocodile is any species belonging to the family Crocodylidae (sometimes classified instead as the subfamily Crocodylinae). The term can also be used more loosely to include all members of the order Crocodilia: i.e. the true crocodiles, the alligators and caimans (family Alligatoridae) and the gharials (family Gavialidae), or even the Crocodylomorpha which includes prehistoric crocodile relatives and …