Which duck-billed Australian mammal lays eggs?
AnswerThe platypus
The platypus is one of the few egg-laying mammals, called monotremes.
Nature · Facts & stats
Freak facts & stats
7 fact-checked facts about nature's oddities and record-breaking animals, each with the reason behind it. 5 more are in today's round and join this page after it closes.
The basics
Which lizard is famous for changing its skin color?
AnswerThe chameleon
Chameleons shift color using special skin cells to signal and regulate temperature.
Going deeper
How many hearts does an octopus have?
AnswerThree
Two hearts pump blood through the gills and one through the rest of the body.
Which tiny creature, nicknamed the water bear, can survive extreme conditions?
AnswerThe tardigrade
Tardigrades can survive drying out, freezing and even exposure to space.
What is the largest animal known to have ever lived?
AnswerThe blue whale
Blue whales can exceed 30 meters and 150 tonnes.
Expert level
Which species is known as the immortal jellyfish?
AnswerTurritopsis dohrnii
It can revert from adult back to its juvenile polyp stage.
Besides the platypus, which other mammals lay eggs?
AnswerEchidnas
Echidnas and the platypus are the only living monotremes.
Know these cold?Today's round is five questions like these, 20 seconds each. Your streak and level follow you to every arena.Play today's round