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Largest Animal by Taxonomic Rank

Guess the largest living species that belongs to each taxonomic rank.
For this quiz, largest means heaviest.
Quiz by
MaxStickies
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Last updated: March 26, 2026
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First submittedDecember 20, 2020
Times taken516
Average score46.7%
Rating4.55
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Group
Maximum Weight
Largest Animal
Rodents (Rodenta)
91 kg
Capybara
Cetaceans (Cetacea)
173 tonnes
Blue Whale
Arachnids (Arachnida)
175 g
Goliath Birdeater
Crocodilians (Crocodilia)
1,075 kg
Saltwater Crocodile
Bivalves (Bivalvia)
250/340 kg
Giant Clam
Cephalopods (Cephalopoda)
495 kg (or more)
Colossal Squid
Carpet Sharks (Orectolobiformes)
15,000 kg
Whale Shark
Crustaceans (Crustacea)
20 kg
American Lobster
Group
Maximum Weight
Largest Animal
Birds (Aves)
145 kg
Ostrich
Monitor Lizards (Varanus)
166 kg
Komodo Dragon
Grasshoppers, Crickets etc. (Orthoptera)
70 g
Little Barrier Giant Wētā
Bovids (Bovidae)
1,500 kg
Gaur
True Jellyfish (Scyphozoa)
150 kg
Lion's Mane Jellyfish
Frogs (Anura)
3.25 kg
Goliath Frog
Turtles (Testudines)
650 kg
Leatherback Sea Turtle
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4 Comments
+3
Level 69
Mar 24, 2026
I feel you should add more type ins like Leatherback, Weta, Comodo Dragon, Capibara etc. Didnt you use the Jetpunk standard type-ins? Felt very hard as a non native english speaker
+1
Level 80
Mar 26, 2026
I wasn't great at fixing the type-ins on these older quizzes, I'll admit. I'll sort them out.
+2
Level 61
Mar 24, 2026
Didn't even consider lobster once i tried King & Spider crabs, guess their bulk really helps. You should add type ins for like Birdeater, Weta, Leatherback, etc
+2
Level 97
Mar 25, 2026
Had no idea that Gaurs could get that big, thought for sure the Bison would be the biggest.