Top 15 World’s Biggest Animals by Species


Animals have various shapes and forms, and they come in a wide range of sizes. So with that, here are 15 of the World’s Biggest Creatures of Their Species.


1. WHALE

According to livescience.com, Balaenoptera musculus is the world’s biggest living mammal or simply the blue whale reaching up to 100 feet or 30 meters long. 


2. FISH

The whale shark (Rhincodon typus) is the biggest fish, reaching 40 feet or 12 meters. And weighs 18.7 metric tons, which is the weight of two school buses, as previously reported in livescience.com.


3. SNAKE

The longest known reticulated python was 26.2 feet or 8 meters long, which is the length of five grand pianos lined up, according to prior reports from livescience.com.


4. BIRD

Pelagornis sandersi is the world’s biggest species of birds that are now extinct. Its wingspan was between 20 and 24 feet or 6.1 and 7.3 meters, twice as long as the current wandering albatross’s wingspan, as cited in livescience.com.


5. CEPHALOPOD

According to livescience.com, the largest extinct cephalopod by shell length was the Cameroceras, which was roughly 20 feet or 6 meters long.


6. LIZARD

According to livescience.com, male Komodo dragons may grow to up to 10 feet or 3 meters long and weigh up to 200 pounds (90 kg). 


7. ARTHROPOD

Jaekelopterus rhenaniae, a massive sea scorpion that grew to be 8.2 feet or 2.5 meters long, is the biggest extinct arthropod mentioned in livescience.com.


8. JELLYFISH

Cyanea capillata can be astoundingly large, reaching a diameter of 6.6 feet or 2 meters, also known as the lion’s mane jellyfish, as claimed by wikipedia.org.


9. BAT

According to the Encyclopedia of Life, the golden-crowned flying fox (Acerodon jubatus) has a wingspan of up to 5.5 feet or 1.7 meters.


10. MARSUPIAL

The red kangaroo (Macropus rufus) is the world’s biggest living animal. According to National Geographic., it may grow to be 5.3 feet or 1.6 meters long from head to rump.


11. BIVALVE

The giant clam is the biggest extant bivalve mollusc (Tridacna gigas), reaching lengths of up to 4 feet or 1.2 meters. According to  livescience.com, the critter within is black and slimy, measuring roughly the size of a baseball bat.


12. DOG

Reaching 3.6 feet at shoulder height. The largest dog on record was Zeus, a donkey-size Great Dane from Otsego, Michigan, according to wikipedia.org.


13. RODENT

The capybara (Hydrochoerus hydrochaeris) reigns supreme among rodents. It measures nearly 2 feet or 60 cm tall at the shoulders, making it the biggest living rodent on the planet, as reported on nationalgeographic.com.


14. FROG

As previously mentioned in livescience.com, Goliath frogs are champion jumpers, can grow up to more than 1 foot or 32 cm. But don’t wait for them to croak about it; these giant frogs are mute. 


15. BUTTERFLY

The Queen Alexandra’s birdwing (Ornithoptera alexandrae). The females of the species are brown and have an opening of the wings from 11 to 12 inches or 28 to 31 cm, as reported in  livescience.com.


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