Are There Mammals That Lay Eggs? - Earthpedia - Earth.com
Introduction to the Monotremata
Possum - ABC News (Australian Broadcasting Corporation)
Do any mammals lay eggs? - Quora
Why Odd Egg-Laying Mammals Still Exist | Live Science
Which Mammal lays Eggs? | Pitara Kids' Network
Some common Australian Animals | Australian animals, Weird mammals, Weird animals
Australian animal oddities
Photo Ark: Short-Beaked Echidnas | National Geographic Society
monotreme | Definition, Characteristics, Reproduction, Examples, & Facts | Britannica
Echidna | San Diego Zoo Animals & Plants
Echidna | Australia animals, Australian animals, Echidna
Do Mammals Lay Eggs? Which Mammals Lay Eggs? - WorldAtlas
Echidna - Wikipedia
Monotremes - Egg laying mammals - YouTube
Turtles choose their egg-laying date - Australian Geographic
platypus | Eggs, Habitat, Venom, & Facts | Britannica
Echidna- spiny insectivorous egg-laying mammal with a long snout and claws, native to Australia and New Guin… | Australia animals, Weird animals, Australian animals
Australian Mammals
Is there an animal which, both gives milk and lays eggs? - Quora
Platypus in peril: Australian egg-laying mammals' habitat shrunk by 22% in 30 years | Daily Sabah
Extreme Monotremes: Why Do Egg-Laying Mammals Still Exist? - Scientific American
Facts About Echidnas | Live Science
The first known case of eggs plus live birth from one pregnancy in a tiny lizard
