ALL ANSWERS · ANIMALS · DAILY No. 21 · SEPTEMBER 24, 2026
Size It Up Animals answer: September 24
The five Animals silhouettes for September 24, with the true sizes. If you have not played yet, this page is a spoiler — play these five first, then come back to argue with the numbers.
Day 21 ran from an Atlantic salmon (75 cm) to a basilosaurus (20 m). The widest gap was round 5, Tyrannosaurus rex against Smilodon, at 6.9×; the closest call was round 4, Basilosaurus against Megalodon, only 1.3× apart — the kind of round that separates a 90 from a 60.
SPOILER · TODAY’S FIVE
You have not finished today’s puzzle on this device. The answers below are blurred so you can still play first.
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ROUND 1
Atlantic Bluefin Tuna (large adult) vs Elasmosaurus
Elasmosaurus · reference · 10.3 m Atlantic Bluefin Tuna · true length · 2.55 m 4.0× shorter than the elasmosaurus
Fully mature Atlantic bluefin tuna average 2 to 2.5 m long; one survey measured specimens up to 2.55 m long.
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ROUND 2
Walrus (Bull) vs Giant Pacific Octopus (Arm span)
Giant Pacific Octopus · reference · 4.3 m Walrus · true length · 3.2 m 1.3× shorter than the giant Pacific octopus
A bull walrus is about 3.2 m long, with tusks up to a metre.
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ROUND 3
Komodo Dragon vs Atlantic Salmon (after two years at sea)
Atlantic Salmon · reference · 75 cm Komodo Dragon · true length · 3 m 4.0× longer than the Atlantic salmon
A Komodo dragon is about 3 m long — the largest living lizard.
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ROUND 4
Basilosaurus vs Megalodon
Megalodon · reference · 16 m Basilosaurus · true length · 20 m 1.3× longer than the megalodon
Basilosaurus measured about 20 m — an early whale built like a sea serpent.
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ROUND 5
Tyrannosaurus rex vs Smilodon (Smilodon fatalis, body length)
Smilodon · reference · 1.75 m Tyrannosaurus rex · true length · 12 m 6.9× longer than the smilodon
Tyrannosaurus rex was about 12 m long — the length of a school bus.
Beat these tomorrow
Every round is worth up to 100 points: within 6% of the true size scores 100, half or double scores 45, five times off scores zero. The daily puzzle is the same five for everyone and refreshes at midnight in your time zone; if you want more than five, Size It Up Unlimited draws fresh pairs from the whole library for as long as you like.