Echidna - Wikipedia
Echidna | Weird animals, Unusual animals, Australia animals
Echidna: Extraordinary Egg-Laying Mammal (Australian Natural History S.), Augee, Michael, Gooden, Brett, Musser, Anne, Augee, Michael, Gooden, Brett, Musser, Anne - Amazon.com
platypus | Eggs, Habitat, Venom, & Facts | Britannica
Snake egg' mystery leaves experts scrambling after Australian school's discovery | Snakes | The Guardian
Echidna | Australia animals, Australian animals, Echidna
Great Mom Platypuses Laying Eggs And Cute Platypuses Moments - YouTube
monotreme | Definition, Characteristics, Reproduction, Examples, & Facts | Britannica
Monotremes - Egg laying mammals - YouTube
Turtles choose their egg-laying date - Australian Geographic
Extreme Monotremes: Why Do Egg-Laying Mammals Still Exist? - Scientific American
Is there an animal which, both gives milk and lays eggs? - Quora
Why Odd Egg-Laying Mammals Still Exist | Live Science
Australia's egg-laying mammals provide clues to our earliest ancestor | Evolution | The Guardian
Do any mammals lay eggs? - Quora
Platypus in peril: Australian egg-laying mammals' habitat shrunk by 22% in 30 years | Daily Sabah
Two native Australian animals, Platypus (left) and Echidnas (right), are the only two mammals in the world that lay eggs to give birth - 9GAG
Possum - ABC News (Australian Broadcasting Corporation)
Australian animal oddities
Monotreme - Wikipedia
The short-beaked echidna is an Australian mammal that has no nipples, and lays eggs. : Awwducational
Photo Ark: Short-Beaked Echidnas | National Geographic Society
Do any mammals lay eggs? - Quora
Facts About Echidnas | Live Science
