The World of Bears
Like Duolingo, but for The World of Bears. Tomo turns the whole topic into a game you play five minutes a day, until it actually sticks.
For the part of you with thirty open tabs that never became anything.
A deep dive: 33 levels across 5 sections, about 66 minutes end to end, roughly 13 days at five minutes a day. It moves through Identifying the Modern Eight, The Mechanics of Survival, Behavior and Life Cycles, Ecology and the Human Element, and Evolutionary Origins. It assumes you already know the basics.
Free forever · No credit card · iPhone & Android

Key ideas in The World of Bears
- The Giant Panda is the only living member of the Ailuropodinae subfamily
- Historical land bridges allowed bears to migrate across northern continents
- The Spectacled Bear represents the unique Tremarctinae lineage
- The Andes mountains isolated the only species to successfully colonize the South
- Most familiar bears like the Brown and Sun bear belong to Ursinae
- Beringia served as a primary corridor for bear dispersal between Asia and America
- Categorizing the eight bear species into their respective subfamilies
- Understanding why bear diversity is concentrated in the Northern Hemisphere
- Brown Bear shoulder hump
- Sun Bear size
- Brown Bear ears
- Bear subfamilies
- Polar Bear size
- Brown Bear facial profile
- Bear dispersal and Beringia
- Brown vs Black bear size
You've tried the other tabs
Thirty open tabs. Four facts you actually kept.
You watched. You nodded. By Sunday it was gone.
One answer, then back to scrolling.
Eight weeks. You meant to finish. You didn't.
Tomo gives The World of Bears the Duolingo treatment: levels, streaks, and quick quizzes that test what you just learned. That game loop is what the tabs above never had, so it's the one you actually finish.
Here's what playing it feels like
A real question from this course. Take your best guess.
How did bears primarily spread across the different continents of the Northern Hemisphere?
Get it right to open this lesson and 32 more in the app.
Where The World of Bears takes you
Go beyond the basics of grizzlies and polars to explore the complex biology, evolutionary history, and survival strategies of the world's eight extant bear species.
- 1
Identifying the Modern Eight
- The Global Bear Map
- Specialized Feeding Niches
- 2
The Mechanics of Survival
- The Science of Hibernation
- Arctic Engineering
- 3
Behavior and Life Cycles
- Communication and Senses
- Reproduction and Development
- Cognition and Intelligence
- 4
Ecology and the Human Element
- Keystone Roles
- The Conflict Frontier
- 5
Evolutionary Origins
- From Bear-Dogs to Giants
- Hybridization and the Future
5 sections · 11 units · 33 levels. Built to play, not to enroll.
You pick the voice
The World of Bears is taught in the The Bestie style: your friend who just gets it. Want a different feel? In the app you can spin up the same topic in any of Tomo's teaching styles. Same facts, totally different vibe.
More Nature on Tomo
Giant Tortoises: Island Giants
Go beyond the basics of longevity to explore the complex biology, ecological impact, and evolutionary strategies of the world's largest land-dwelling reptiles.
Marmot Biology
Discover the fascinating lives of nature's mountain engineers. From the famous 'whistle' to the secrets of extreme hibernation, learn how these giant squirrels survive the world's harshest peaks.
The Purpose of Tails
Explore the diverse evolutionary functions of the mammalian tail, from high-speed rudders and social signaling to biological scarves and energy storage.
Walrus Life: Giants of the Arctic Ice
Discover the incredible survival strategies and social secrets of the Arctic's most iconic tusked giants. Learn how these massive mammals engineer their environment and thrive in the world's harshest conditions.
Apex Predators: Behavior and Survival
Learn to read the body language of the world's most powerful hunters and understand the biological mechanics behind their combat styles and survival instincts.
Dinosaur Mastery: Beyond the Basics
Move past the famous names to discover how these giants actually lived, what they ate for lunch, and why some grew to the size of buildings while others stayed small as chickens.
Start The World of Bears today.
Download Tomo, search The World of Bears, and play your first lesson in under a minute.