WHO WILL WIN?
Otter
CHIRP-CHUCKLE
T. rex
RAAWR
THE SETUP

Otter vs T. rex

Otter
Otter
T. rex
T. rex

Pretend they meet in river country. Dinosaurs lived long ago. Look at the facts. Then you pick.

Would they meet?

No. Otter and T. rex did not live at the same time. This meeting is pretend.

This is pretend and based on facts. Real animals usually hide or leave.

Read the facts. Make your card. The page waits to pick.

Corner A

Otter

Lontra canadensis · A slippery wrestler who treats rivers like gyms.

Otter
Home
Rivers and lakes · Lives in North America
Food
Meat
Group
Lives with family
Size
Otter is small.

Fish wrestler.

Whiskers in murky water.

Playful hustle.

  • Otter is small and not very fast.
  • Fish, crayfish, frogs — they eat lunch in the pool.
  • Riverbanks with dens called holts.

Family: Weasels, badgers, and wolverines.

Corner B

T. rex

Tyrannosaurus rex · The banana-toothed bone cruiser.

T. rex
Home
Late Cretaceous floodplains of western North America · Lived in North America long ago
Food
Meat
Group
Lives alone
Size
T. rex is giant.

Giant bite-and-pull hunter.

A huge smelling system and eyes that faced more forward than most dinosaurs.

Top of a vanished food web.

  • T. rex is giant and not very fast.
  • Horned dinosaurs, duckbills, leftover carcasses — a giant meat-eater that did not skip free calories.
  • Fossils come from places like Hell Creek: forests, rivers, and floodplains about 66 million years ago.

Family: Birds!

TO SCALE!

SIZE & WEIGHT

Stand them next to a grown-up. Who is bigger and heavier?

1.70 m

Grown-up

0.40 m

Otter to scale

Otter

3.7 m

T. rex to scale

T. rex

Height to scale. A grown-up is 1.7 m.

Otter10 kg

About as heavy as a bag of flour that learned backstroke.

T. rex8,200 kg

Hip-tall as a basketball hoop, heavier than an African elephant, longer than a school bus.

Otter

0.40 m · 10 kg

Otter is small. 10 kg.

T. rex

3.7 m · 8,200 kg

T. rex is giant. 8,200 kg.

Kilograms are honest. A small animal can still have a strong tool.

Who would you pick for size?

TOOLKIT!

TOOLS

Teeth, claws, horns, venom, kick — what tools do they have?

  • Weapon: Needle teeth plus twist
  • Armor: Oilskin fur
  • Senses: Whiskers in murky water.

Otter · labeled field diagram

  • Weapon: Banana-sized bone shears
  • Armor: Thick skull and a neck like a crane
  • Senses: A huge smelling system and eyes that faced more forward than most dinosaurs.

T. rex · labeled field diagram

Otter150 psi bite
T. rex8000 psi bite

Otter

Needle teeth plus twist

Tool: needle teeth plus twist. Bite: 150 psi.

T. rex

Banana-sized bone shears

Tool: banana-sized bone shears. Bite: 8,000 psi.

A bite number is only one tool. Coils and kicks count too.

Whose tools would you trust?

ZOOM!

SPEED

Who gets there first?

Otter
30 km/h
T. rex
20 km/h
Otter30 km/h
T. rex20 km/h

Otter

30 km/h

Otter can go 30 km/h. That is not very fast.

T. rex

20 km/h

T. rex can go 20 km/h. That is not very fast.

A fast animal can miss. A slow one only has to connect.

Who takes the speed card?

HOME MAP!

HOME

They meet in river country. Who is built for this place?

N. AmericaS. AmericaEuropeAfricaAsiaAustraliaAntarctica
OtterT. rexBoth

Meeting biome: river country. Colored land is fossil range for dinosaurs and living range for zoo animals.

Otter

This is home · Lives in North America

Otter lives in places like river country.

T. rex

Can handle it · Lived in North America long ago

T. rex's home is the late cretaceous floodplains of western north america, not river country.

No. Otter and T. rex did not live at the same time. This meeting is pretend.

Who gets the home point?

MENU!

FOOD

How do they get lunch?

Otter
Meat · Fish wrestler.
T. rex
Meat · Giant bite-and-pull hunter.

Otter

Meat · Fish wrestler.

Fish, crayfish, frogs — they eat lunch in the pool.

T. rex

Meat · Giant bite-and-pull hunter.

Horned dinosaurs, duckbills, leftover carcasses — a giant meat-eater that did not skip free calories.

A plant eater is not 'safe.' Hippos and elephants still end arguments.

Whose hunting or defending helps more?

MOOD!

MOOD

Alone vs team. This rumble is one vs one.

Otter
Lives with family
T. rex
Lives alone
Otter7 grit /10
T. rex9 grit /10

Otter

Lives with family

Playful hustle. Grit: 7/10.

T. rex

Lives alone

Top of a vanished food web. Grit: 9/10.

Pack and pride animals lose their backup in a 1-v-1.

Who is better for a solo meeting?

PING!

BRAINS

Who notices first and thinks next?

Otter
7/10
T. rex
5/10
Otter7 brains /10
T. rex5 brains /10

Otter

7/10

Whiskers in murky water.

T. rex

5/10

A huge smelling system and eyes that faced more forward than most dinosaurs.

In the wild, brains often mean leave before it starts.

Who would you score for noticing?

COUSINS!

FAMILY

Who are they related to?

Otter
Lontra canadensis
T. rex
Tyrannosaurus rex

Otter

Lontra canadensis

Weasels, badgers, and wolverines.

T. rex

Tyrannosaurus rex

Birds!

Cousins are clues, not a score.

Not a fight point. Who has the wilder family story?

WILD CARD!

SPECIAL

What special move did they evolve?

Otter
Slide Tackle
T. rex
Bone-Crunch Clamp

Otter

Slide Tackle

Mud slides are transport.

T. rex

Bone-Crunch Clamp

T.

A secret move here is a real wild tool, not a video-game combo.

Whose special move would change the meeting?

YOUR SCORECARD

Your scorecard

Tap who has each fact. Then tap who you think wins.

  • SIZE & WEIGHT

  • TOOLS

  • SPEED

  • HOME

  • FOOD

  • MOOD

  • BRAINS

  • SPECIAL

Your card: Otter 0 · T. rex 0 · still open 8

Who wins the meeting?

Keep going for the pretend meeting, then the science pick.

THWACK!

THEY MEET

Otter runs first. T. rex does not race. They wait in river country.

Pretend · fact-based · not a gore-fest

SLAM!

THE TOOLS SHOW UP

T. rex is heavier. Otter uses needle teeth plus twist. Nobody is keeping a gore score.

Pretend · fact-based · not a gore-fest

POW!

SPECIAL MOVES

Otter tries the Slide Tackle. T. rex tries the Bone-Crunch Clamp. Keep your card. The last page is next.

Pretend · fact-based · not a gore-fest

THE SCIENCE PICK

T. rex!

A STOMP

You skipped a final pick. The facts still stamp a champ.

On river country, T. rex wins. T. rex is a lot heavier. Otter would still win some meetings at home.

In the wild, most animals skip a fight. We still judge who the bodies and the place would favor.

Science card: Otter 3 · T. rex 5.

Your card: Otter 0 · T. rex 0.

The last page follows the whole animal — body plus home — not one bar chart.

Send this fight

A friend can read the same facts.

Also starring · Otter

Playtime. The official otter sport.

Wikimedia Commons · CC. Source

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