Pick a topic to preview real questions and start a free game — every answer comes with an explanation, so you learn as you play. Every topic carries easy, medium and hard questions, so beginners and experts both get a real game.
A mix of easy, medium and hard — questions run from warm-up to expert, so there's a real challenge at every level. Think you know the answers? Play to find out.
This is the largest land animal alive, and it greets family with a low rumble below human hearing.
Difficulty: Easy
The male of this red ape grows enormous fatty cheek flanges that broaden his face into a disc.
Difficulty: Medium
This masked hunter was twice declared extinct, and every one alive descends from seven animals.
Difficulty: Hard
This grey tree-dweller sleeps up to 20 hours a day on a diet that would poison most other animals.
Difficulty: Easy
This freshwater swimmer turns pink with age and has an unfused neck, so it can turn its head sideways.
Difficulty: Medium
This browser has a pointed prehensile upper lip for stripping twigs and a reputation for charging first.
Difficulty: Medium
This is the only pinniped in the world living entirely in fresh water, in one very deep lake.
Difficulty: Hard
This is the heaviest land animal on the continent, cut from tens of millions to a few hundred by 1889.
Difficulty: Easy