WHO WILL WIN?
Boa
Sss-SQUEEZE
Spinosaurus
CROCO-RAAWR
THE SETUP

Boa vs Spinosaurus

Boa
Boa
Spinosaurus
Spinosaurus

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

Would they meet?

No. Boa 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

Boa

Boa constrictor · A rainforest squeeze with a calm face.

Boa
Home
Central and South American forests · Lives in South America
Food
Meat
Group
Lives alone
Size
Boa is small.

Constrictor of the forest floor and low branches.

Heat pits and a patient stare.

Calm coil.

  • Boa is small and slow.
  • Rodents, birds, lizards — medium meals, no need to be famous about it.
  • Trees and forest floor.

Family: Anacondas and other boas.

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

0.25 m

Boa to scale

Boa

2.8 m

Spinosaurus to scale

Spinosaurus

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

Boa15 kg

About as heavy as a bowling ball that learned yoga.

Spinosaurus7,000 kg

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

Boa

0.25 m · 15 kg

Boa is small. 15 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: Constriction hug
  • Armor: Saddle-pattern camo
  • Senses: Heat pits and a patient stare.

Boa · 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

Boa120 psi bite
Spinosaurus2000 psi bite

Boa

Constriction hug

Tool: constriction hug. Bite: 120 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?

Boa
4 km/h
Spinosaurus
18 km/h
Boa4 km/h
Spinosaurus18 km/h

Boa

4 km/h

Boa can go 4 km/h. That is slow.

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
BoaSpinosaurusBoth

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

Boa

Can handle it · Lives in South America

Boa's home is the central and south american forests, not river country.

Spinosaurus

This is home · Lived in Africa long ago

Spinosaurus lives in places like river country.

No. Boa 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?

Boa
Meat · Constrictor of the forest floor and low branches.
Spinosaurus
Meat · River specialist.

Boa

Meat · Constrictor of the forest floor and low branches.

Rodents, birds, lizards — medium meals, no need to be famous about it.

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.

Boa
Lives alone
Spinosaurus
Lives alone
Boa6 grit /10
Spinosaurus7 grit /10

Boa

Lives alone

Calm coil. Grit: 6/10.

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?

Boa
4/10
Spinosaurus
4/10
Boa4 brains /10
Spinosaurus4 brains /10

Boa

4/10

Heat pits and a patient stare.

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?

Boa
Boa constrictor
Spinosaurus
Spinosaurus aegyptiacus

Boa

Boa constrictor

Anacondas and other boas.

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?

Boa
Branch Drop Wrap
Spinosaurus
River-Ambush Paddle

Boa

Branch Drop Wrap

They hunt from perches.

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: Boa 0 · Spinosaurus 0 · still open 8

Who wins the meeting?

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

THWACK!

THEY MEET

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

Pretend · fact-based · not a gore-fest

SLAM!

THE TOOLS SHOW UP

Spinosaurus is heavier. Boa uses constriction hug. Nobody is keeping a gore score.

Pretend · fact-based · not a gore-fest

POW!

SPECIAL MOVES

Boa tries the Branch Drop Wrap. 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 likes river country more. Boa 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: Boa 0 · Spinosaurus 7 · ties 1.

Your card: Boa 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.

1/17 · scroll