TUATARA
Sphenodon punctatus
DESCRIPTION
The tuatara is a unique reptile endemic to New Zealand, often referred to as a 'living fossil' due to its ancient lineage. It resembles a lizard but belongs to a distinct order, Rhynchocephalia, which has existed for over 200 million years.
FUN FACTS
- Tuatara have a third eye on the top of their head, which is sensitive to light | They can live for over a century, making them one of the longest-living reptiles | Tuatara have a unique method of reproduction, with females laying eggs every 2-5 years
QUICK INFO
Lifespanup to 100 years in the wild
Average Weight1-2 kg
Average Length0.6-0.8 m
Diet TypeInsectivore
Social Structuresolitary, with males often defending territories
Activity PatternNocturnal
Breeding SeasonSpring (September-November)
- Habitat
- Tuatara inhabit coastal forests, scrublands, and offshore islands. They prefer areas with plenty of cover and burrows for shelter.
- Biomes
- Temperate Forest, Coastal
- Native Range
- Endemic to New Zealand, particularly on offshore islands and some mainland areas.
- Continent
- Oceania
- Countries
- New Zealand
- Diet
- Tuatara primarily feed on insects, small invertebrates, and occasionally small vertebrates. They have a slow metabolism and can go long periods without food.
- Diet Type
- Insectivore
- Favorite Food
- insects, worms, small birds
- Social Structure
- solitary, with males often defending territories
- Activity Pattern
- Nocturnal
- Group Size
- 1-2
- Territorial
- 1
LC
VU
1-2 kg
Weight
0.6-0.8 m
Length
- Coloration
- greenish-brown with a spiny crest along the back
- Sexual Dimorphism
- males are generally larger than females
- Lifespan
- up to 100 years in the wild
- Offspring per Birth
- 8-15
- Sexual Maturity
- 10-20 years
- Breeding Season
- Spring (September-November)
VU
Vulnerable
IUCN Red List Status
- Population Status
- The population is currently stable but localized due to habitat loss and introduced predators.
- Wild Population Estimate
- approximately 50,000
- Population Trend
- Stable
- Endangered
- 0
- Threats
- Main threats include habitat destruction and predation by introduced species such as rats and cats. Conservation efforts are ongoing to protect their habitats.
- Conservation Program
- Tuatara recovery programs on predator-free islands
- Predators
- rats, cats, and birds of prey
- Defense Mechanisms
- Tuatara can remain motionless for long periods to avoid detection and can also use their sharp teeth for defense.
- Found in Zoos
- Uncommon