Critter Science

The Science of Animals

frill neck lizard

The Fierce Looking Frill Necked Lizard

Looking like something straight out of Jurassic Park, we have the frill necked lizard. They are quick ambush predators that have a really cool defense mechanism… a large fan-like frill that they extend to make themselves seem larger and more fierce. If that doesn’t work, they are able to quickly run away on their hind legs to the safety of a nearby tree.

First the Stats…

Scientific name: Chlamydosaurus kingii
Weight: Up to .5 lbs.
Length: Up to 2.8 feet
Lifespan: Up to 20 years (in captivity)

Now on to the Facts!

1.) The frill necked lizard has a colorful flap of skin around their neck. This is a group of pleats and it is typically folded. They expose their neck frill when they feel threatened, during mating rituals, and to eliminate excess heat. The flap is 12 inches in diameter when unfolded.

2.) These lizards are diurnal (active during daylight hours).

3.) This lizard is an ambush predator. It lays in wait for the right opportunity to strike and then they attack.

4.) They eat cicadas, spiders, ants, small lizards, termites, and even small mammals.

5.) They are arboreal (spend most or all of their lives in trees).

But wait, there’s more on the frill necked lizard!

6.) Females lay between 8 – 23 small eggs in an underground nest. Incubation lasts 2 – 3 months.

7.) The frill necked lizard is a solitary creature, sans breeding time.

Did you know…?
When they have to make a hasty retreat, they can run quickly using bipedal locomotion (using hind legs to run).

8.) Just like tortoises, temperature determines gender. Warmer temperatures results in females and cooler temperatures yield more males.

9.) Their main predators are larger lizards, dingoes, birds of prey, cats, and the pet trade.

10.) A frill necked lizard was imprinted on the Australian 2 cent coin that was used as a currency until 1991.

Now a Short Frill Necked Lizard Video!

Learn more about all kinds of cool critters here.

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Critter Man

With over 40 years of critter experience to my credit and hundreds of zoology teaching hours to people around the world, I have amassed not only a continuing thirst for critter knowledge but a desire to teach others all I can about the majesty and wonder of our natural world. Critter Science is a culmination of such knowledge.I have hands on as well as book acquired intel on all kinds of critters. Whether they're on land, sea, or air.I will never say that I know everything about all animals. That's impossible, even for a savant. But, that being said, ask me any animal question and I'll answer it. If I don't know the answer, I'll get an answer for you!Let it be said that I have been oft times accused of loving animals more than I love people. I can neither confirm nor deny this.

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