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Scaly animals that lay eggs on land, like snakes, lizards, turtles, and crocodiles, often found in warm climates.

Scientific Name Alligator mississippiensis

Fact Alligators have a "homing" instinct; if moved to a new location, they can find their way back to their original home from over 50 miles away.

Weight KG 90–450 kg

Country United States

Continent North America

Central Bearded Dragon

Scientific Name Pogona vitticeps

Weight LB 0.6–1.2 lb

Average Life Span 8–12 years (up to 15 in captivity)

Fact A fun fact about Pogona vitticeps, the Central Bearded Dragon, is they have a tiny "third eye" (parietal eye) on top of their head that detects light and shadows, helping them spot predators from above, and they also communicate with head bobbing, arm waving, and puffing their spiky "beards" black when threatened.

Weight KG 0.3–0.55 kg

Country Australia

Continent Oceania

Habitat Deserts, Dry woodlands

Diet Omnivore

Conservation Status Least Concern

Region Australia

Eastern Diamondback Rattlesnake

Scientific Name Crotalus adamanteus

Weight LB 5–10 lb

Average Life Span 10–20 years

Fact The rattle at the end of its tail is made of hollow segments of keratin (the same protein found in your hair and fingernails). Each time the snake sheds its skin, a new segment is added to the rattle. However, you can't tell a snake's age by its rattle—segments often break off in the wild, and snakes may shed their skin multiple times a year depending on how much they eat!

Weight KG 2.3–4.5 kg

Country United States

Continent North America

Habitat Coastal dunes, Pine forests, scrublands

Diet Carnivore

Conservation Status Near Threatened

Region North America

Gila Monster

Scientific Name Heloderma suspectum

Weight LB 1.5–5 lb

Average Life Span 20–30 years

Fact A fun fact about the Gila monster is that a protein from its venom, exendin-4, led to the creation of a diabetes drug (Byetta) that helps control blood sugar, showing how this venomous lizard's bite can save lives. They are also one of the few truly venomous lizards in the world, spend most of their lives underground, and store fat in their tails to survive long periods between meals.

Weight KG 0.7–2.3 kg

Country United States

Continent North America

Habitat Deserts, Rocky foothills

Diet Carnivore

Conservation Status Near Threatened

Region North America

Green Anaconda

Scientific Name Eunectes murinus

Weight LB 65–550 lbs

Average Life Span 10–12 years (Wild) / Up to 30 years (Captivity)

Fact Anacondas are ovoviviparous, meaning they don't lay eggs in a nest; instead, the eggs hatch inside the mother, and she gives birth to up to 30 live young at once!

Weight KG 30–250 kg

Continent South America

Green Sea Turtle

Scientific Name Chelonia mydas

Weight LB 240–420 lbs (The largest can reach 700 lbs)

Average Life Span 70–80 years

Fact They are incredible navigators, using the Earth's magnetic field like a built-in GPS to find their way back to the exact same beach where they were born to lay their own eggs.

Scientific Name Iguana iguana

Weight LB 9–18 lbs

Average Life Span 15-20 years Up to 20 years (Captivity)

Fact Iguanas have a "third eye" on top of their heads called a parietal eye. While it can't see images, it detects changes in light and movement to help them spot predators like hawks from above.

Weight KG 4 to 8 kg

Continent South America

King Cobra

Scientific Name Ophiophagus hannah

Weight LB 10–20 lbs

Average Life Span 20 years

Fact Their genus name, Ophiophagus, literally means "snake-eater" because their diet consists almost entirely of other snakes—including venomous ones!

Scientific Name Varanus komodoensis

Weight LB 150–200 lbs (The largest recorded was 366 lbs!)

Average Life Span 30 years

Fact They have venom glands that prevent their prey's blood from clotting and cause a massive drop in blood pressure, ensuring the prey goes into shock.

Scientific Name Eublepharis macularius

Weight LB 0.1–0.2 lbs

Average Life Span 10–20 years (In captivity, they often live much longer than in the wild).

Fact They store fat in their tails; a thick, plump tail is a sign of a very healthy and well-fed gecko!

Weight KG 0.045–0.085 kg

Continent Asia

Nile Crocodile

Scientific Name Crocodylus niloticus

Weight LB 500–1,650 lbs (Large males can exceed 2,000 lbs)

Average Life Span 70–100 years

Fact Nile Crocodiles have the strongest bite in the animal kingdom, capable of applying a force of about 5,000 psi (pounds per square inch).

Scientific Name Chamaeleo calyptratus

Weight LB 0.2–0.4 lbs

Average Life Span 4–6 years (Females) / 6–8 years (Males)

Fact Their eyes can rotate and focus independently, allowing them to look at two different objects at the same time—a full 360-degree view!

Weight KG 0.09–0.18 kg

Country Saudi Arabia

Continent Asia

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Reptiles