According to fossil evidence snakes first appeared on Earth during the Cretaceous period between 143 and 167 million years ago. The earliest known snake fossils come from a site in southern Africa known as Tegana which dates back to the Early Cretaceous around 150 million years ago.
There are many different theories about how snakes evolved from their reptilian ancestors. One theory suggests that snakes evolved from burrowing lizards as they share many common features including a long snake-like body and a lack of limbs. Another theory suggests that snakes evolved from a group of marine reptiles known as mosasaurs.
Today there are over 3400 species of snakes found in every continent except Antarctica. Snakes play an important role in many ecosystems preying on rodents and other small animals. They are also one of the most popular pets in the world.
What is the longest snake in the world?
The longest snake in the world is the reticulated python which can grow to be up to 30 feet long.
What is the largest snake in the world?
The largest snake in the world is the anaconda which can grow to be up to 30 feet long and weigh up to 550 pounds.
How long do snakes usually live?
Snakes usually live for 10-20 years though some species can live for up to 40 years.
What do snakes eat?
Snakes eat a variety of prey depending on the species.
Some snakes eat small mammals while others eat birds or fish.
How do snakes kill their prey?
Snakes kill their prey by constricting them which cuts off their circulation and suffocates them.
Do all snakes have venom?
No not all snakes have venom.
Venomous snakes have special fangs that deliver the venom into their prey.
How do scientists estimate the age of a snake?
Scientists estimate the age of a snake by counting the number of annual growth rings on its bones.
What is the smallest snake in the world?
The smallest snake in the world is the thread snake which can grow to be just over 4 inches long.
How do snakes move?
Snakes move by slithering which is a sideways undulating motion.
What benefits do snakes have for humans?
Snakes play an important role in the ecosystem by helping to control populations of rodents and other small prey animals.
How do snakes venomous snakes defend themselves?
Venomous snakes defend themselves by biting their predators and injecting them with venom.
What is the difference between a venomous snake and a poisonous snake?
A venomous snake has special fangs that deliver the venom into their prey while a poisonous snake has toxins that can be deadly if ingested.
What are some of the dangers of snakes?
Some of the dangers of snakes include being bitten by a venomous snake or being constricted by a large snake.
What should you do if you see a snake?
If you see a snake you should stay calm and observe it from a distance.
If you feel threatened you can call your local animal control or Wildlife Conservation Society for assistance.
What is the best way to prevent snake bites?
The best way to prevent snake bites is to avoid snakes altogether.
If you must go into an area where snakes are present wear long pants and boots and be sure to watch where you step.
