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Lizard Terminology

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When learning about lizards, you will undoubtedly come across terms you do not understand. To understand the world of herpetology, you need to know these terms, and how they apply to lizards.

Arboreal
Lizards that spend a large amount of time in trees are classified as arboreal. The first part of the word, arbor, is the latin word for 'tree'.

Autotomy
Self-severing, or self-amputation. In this case, the ability of a lizard to drop it's own tail.

Carnivorous
A lizard whom eats only meat (animals, insects) is said to be carnivorous.

Data Deficient
When a lizard is classified as 'Data Deficient' by the IUCN, it means there is insufficient data for proper conservation classification.

Debilitation
This terms simply refers to the weakening of the lizard. This can refer to the bones, skin, tail or anything that is getting weaker.

Dewlap
Not all lizards have dewlaps, but some do, like the Green Anole and Brown Anole. A dewlap is the inflatable or extendable flap of skin under their necks.

Dorsal
The term 'dorsal' refers to the backside, or top, of a lizards body.

Diurnal
Diurnal is the opposite of nocturnal (see below). Diurnal lizards follow a human sleep pattern; active and eating during the day, while sleeping at night.

Ectothermic
The term ectothermic refers to living things (animals, plants, etc) that warm their bodies using external sources.

Endemic
When a lizard is said to be 'endemic', it means they are confined, restricted, or found only in a particular location.

Estivation
A state of dormancy in which some lizards enter during a hot and dry season. It is somewhat similar to hibernation, but their bodies do not enter the same state.

Femoral
This term means the item in question is situated near the thigh, or femur. In lizards it most often refers to pores located at the base of the tail.

Gut-loading
This is the process of feeding prey nutritious food with the intention of passing it on to the lizard.

Herbivorous
A lizard that eats only fruits, vegetables, and other plant matter is herbivorous.

Hibernate
Some lizards can place themselves in a state of regulated hypothermia, which conserves energy during winter months, and allows them to survive without food.

IUCN
The IUCN (International Union for Conservation of Nature and Natural Resources) is an organization dedicated to natural resource conservation. They are responsible for classifying the conservation status' of lizards, and other animals.

Morphology
The study of the form, shape or configuration of an organism or part of an organism.

Nocturnal
When a lizard is nocturnal, it means they are active during the night. A nocturnal lizard will sleep during the daytime and hunt for food at night.

Nuchal Crest
A row of spikes starting large at the base of the head that gets smaller as it moves down to the base of the tail.

Omnivorous
Animals that eat both meat and plant matter are said to be omnivorous.

Oviparous
An animal that is oviparous, like most lizards, lay eggs as opposed to giving live birth. Little development happens inside the mother.

Ovoviviparous
These animals retain eggs inside their body, and give birth to live offspring.

Parthenogenetic
Female lizards that are parthenogenetic develop eggs without the fertilization from a male.

Pineal Gland
The pineal gland in lizards regulates their internal biological clock, and helps in thermoregulation. It is located on the surface of the brain, and is connected to their Parietal Eye.

Preanal
The term preanal means 'before the anus'. With lizards it most often refers to pores located on the underside of the lizard, located immediately before the anus.

SVL
The abbreviation for snout-vent length is SVL, and is commonly used when describing the size of a lizard. This is the measurement from the tip of their snout, to the opening of their vent.

Terrestrial
Lizards that live partially or entirely on land are classified as terrestrial.

Thermoregulation
Lizards are cold-blooded and do not produce an internal temperature. They have to regulate their body temperature using their external environment, and this is referred to as thermoregulation.

Tubercles
These are wart-like projections, or rounded bumps, commonly found on lizards.

Ventral
The underside (abdomen, or belly) of a lizard.

 
 
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