WHO WILL WIN?
Otter
CHIRP-CHUCKLE
Spinosaurus
CROCO-RAAWR
THE SETUP

Otter vs Spinosaurus

Otter
Otter
Spinosaurus
Spinosaurus

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

Would they meet?

No. Otter and Spinosaurus 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

Spinosaurus

Spinosaurus aegyptiacus · A sail-backed river hunter longer than a bus.

Spinosaurus
Home
Mid-Cretaceous rivers of North Africa · Lived in Africa long ago
Food
Meat
Group
Lives alone
Size
Spinosaurus is giant.

River specialist.

A snout that may have sensed pressure in water, like a crocodile's face.

Boss of a Cretaceous river.

  • Spinosaurus is giant and not very fast.
  • Giant fish, and probably other animals that came to drink.
  • Cretaceous North Africa, about 95 million years ago — rivers and mangrove-ish coasts, not the Serengeti.

Family: Other spinosaurids like Baryonyx and Suchomimus.

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

2.8 m

Spinosaurus to scale

Spinosaurus

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

Otter10 kg

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

Spinosaurus7,000 kg

Longer than T. rex, maybe as long as a city bus, with a sail that could top a doorway.

Otter

0.40 m · 10 kg

Otter is small. 10 kg.

Spinosaurus

2.8 m · 7,000 kg

Spinosaurus is giant. 7,000 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: Croc-snout plus canoe claws
  • Armor: Sail and dense bones
  • Senses: A snout that may have sensed pressure in water, like a crocodile's face.

Spinosaurus · labeled field diagram

Otter150 psi bite
Spinosaurus2000 psi bite

Otter

Needle teeth plus twist

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

Spinosaurus

Croc-snout plus canoe claws

Tool: croc-snout plus canoe claws. Bite: 2,000 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
Spinosaurus
18 km/h
Otter30 km/h
Spinosaurus18 km/h

Otter

30 km/h

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

Spinosaurus

18 km/h

Spinosaurus can go 18 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
OtterSpinosaurusBoth

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.

Spinosaurus

This is home · Lived in Africa long ago

Spinosaurus lives in places like river country.

No. Otter and Spinosaurus 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.
Spinosaurus
Meat · River specialist.

Otter

Meat · Fish wrestler.

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

Spinosaurus

Meat · River specialist.

Giant fish, and probably other animals that came to drink.

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
Spinosaurus
Lives alone
Otter7 grit /10
Spinosaurus7 grit /10

Otter

Lives with family

Playful hustle. Grit: 7/10.

Spinosaurus

Lives alone

Boss of a Cretaceous river. Grit: 7/10.

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
Spinosaurus
4/10
Otter7 brains /10
Spinosaurus4 brains /10

Otter

7/10

Whiskers in murky water.

Spinosaurus

4/10

A snout that may have sensed pressure in water, like a crocodile's face.

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
Spinosaurus
Spinosaurus aegyptiacus

Otter

Lontra canadensis

Weasels, badgers, and wolverines.

Spinosaurus

Spinosaurus aegyptiacus

Other spinosaurids like Baryonyx and Suchomimus.

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
Spinosaurus
River-Ambush Paddle

Otter

Slide Tackle

Mud slides are transport.

Spinosaurus

River-Ambush Paddle

Spinosaurus was built to hunt in rivers.

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 · Spinosaurus 0 · still open 8

Who wins the meeting?

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

THWACK!

THEY MEET

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

Pretend · fact-based · not a gore-fest

SLAM!

THE TOOLS SHOW UP

Spinosaurus 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. Spinosaurus tries the River-Ambush Paddle. Keep your card. The last page is next.

Pretend · fact-based · not a gore-fest

THE SCIENCE PICK

Spinosaurus!

A STOMP

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

On river country, Spinosaurus wins. Spinosaurus 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 · Spinosaurus 4 · ties 1.

Your card: Otter 0 · Spinosaurus 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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