Probing Platypus Evolution | National Geographic

Where can platypuses be found?

• Only in the rivers and lakes of Tasmania.

• In rivers, streams, and lakes along the East Coast of Australia.

• Throughout all of Australia's freshwater systems.

• In the oceans surrounding Australia.

How do platypuses in Northern Queensland compare in size to those in Tasmania?

• Northern platypuses are about three times larger.

• Northern platypuses are about the same size.

• Northern platypuses are about one-third the size.

• Northern platypuses are twice as large.

What unique defense mechanism do male platypuses possess?

• They can change their skin color to blend in with their surroundings.

• They have a venomous spur on their hind foot.

• They can spray a foul-smelling liquid at predators.

• They have sharp teeth that can deliver a powerful bite.

What type of genetic material do researchers collect from platypuses for their studies?

• Blood samples from their bills.

• Hair follicles from their fur.

• Small pieces of skin from their toe web.

• Saliva samples from their mouths.