The video discusses the 10 largest and most fearsome animals to have ever existed. The list includes:
1. Apatosaurus - a giant dinosaur that lived during the Jurassic period.
2. Titanoboa - a massive snake that ruled prehistoric Colombia.
3. Megalodon - a giant shark that lived millions of years ago.
4. Easterners - one of the largest birds in history.
5. Short-faced bear - a massive mammalian predator that lived during the ice age.
6. Anaconda - a large non-venomous snake that is still alive today.
7. Saltwater crocodile - a large reptile that is known for its powerful jaws.
8. Sperm whale - a species that is in danger of extinction and has the ability to dive deep into the ocean.
9. Boot cord worm - a long and fragile worm that measures between 35 and 50 meters.
10. Unnamed animal (video doesn't reveal the #1 largest animal, encouraging viewers to watch another video to find out).
1. The Apatosaurus is the largest dinosaur in the world.
2. The name "Apatosaurus" comes from Greek and literally means "deceptive lizard".
3. The Apatosaurus lived during the Jurassic period, approximately 150 million years ago.
4. The Apatosaurus was a herbivorous dinosaur.
5. A vertebra of an Apatosaurus was 2.5 meters tall.
6. The first species of Apatosaurus was found and studied for the first time in 1877.
7. The Titanoboa was a prehistoric snake that lived in Colombia.
8. The Titanoboa was estimated to be between 42 feet and 49 feet long.
9. The Titanoboa was discovered in a coal mine in northern Colombia in the 21st century.
10. The Megalodon was a carnivorous shark that lived millions of years ago.
11. The Megalodon could grow up to 20 meters in length and weigh up to 47 tons.
12. The Megalodon had a powerful bite force.
13. The Easterners lived 8 million years ago and were one of the largest birds in history.
14. The Easterners had a wingspan of almost 7 meters.
15. The Megalodon lived during the Miocene to the end of the Pliocene epoch.
16. The short-faced bear was a carnivorous animal that lived during the ice age.
17. The short-faced bear could run up to 70 kilometers per hour.
18. The short-faced bear had powerful jaws and could weigh up to 70 kilograms.
19. The Anaconda is a non-venomous snake that can grow up to 10 meters in length.
20. The Anaconda is found in the Amazon River and can weigh up to 150 kilos.
21. The Saltwater Crocodile is a large reptile that can be found in Australia and Southeast Asia.
22. The Sperm Whale is a species that is in danger of extinction.
23. The Sperm Whale can dive up to 1000 meters in search of food and hold its breath for up to 90 minutes.
24. The Sperm Whale can grow up to 20 meters in length and weigh up to 40 tons.
25. The Boot Cord Worm is the largest animal in the world and can grow up to 50 meters in length.