Venom spurs, duck bills and spiky penises: A year in the life of a platypus | Meet the platypus, one of the weirdest animals on Earth: | By TED-Ed | Facebook
8 Amazing Things About the Platypus
This Is the Echidna Penis. I Echid You Not. | Curious Cox
File:Male Platypus Reproductive System.svg - Wikimedia Commons
Platypus Anatomy & Mating | Do Platypus Lay Eggs? | Study.com
Week 3 - monotreme reproduction Flashcards | Quizlet
Solving the mystery of the four-headed echidna penis | Pursuit by The University of Melbourne
Katie on Twitter: "Just learned a new thing about the platypus, this patchworked river dumbass, God's drunken mistake, the greatest shame of the antipodes https://t.co/I1H7DwW2oU" / Twitter
Phallic Structure and Function (Chapter 5) - Mammalian Sexuality
Echidna's Male Organ has Four Heads - YouTube
Five weird things about platypuses and echidnas - ABC News
An Echidna's Penis Has Four Heads, New Study Reveals How It Works | Mental Floss
Absurd Creature of the Week: Forget the Platypus. The Echidna Is the True Champ of Weird | WIRED
Jan Freedman on Twitter: "And snake and lizard hemipenises can come in so many shapes - some have spines or hooks on them!! In fact, lots of animals have oddly shaped penises.
Australian researchers discover why only two of echidna's four penis heads become erect at one time | Australia news | The Guardian
How are platypuses born?
10 Reasons Why Platypodes Are The Weirdest Animals | by Anna Mensch | Medium
Australian researchers discover why only two of echidna's four penis heads become erect at one time | Australia news | The Guardian
We now know how the bizarre platypus and echidna arrived to Australia from the Antarctic
Strange Sex: Reproduction in Taxonomy's Frankenstein – Columbia Science Review
Platypuses | Veterian Key
Animal Sex: How Platypuses Do It | Live Science
It Turns Out Echidnas Have Massive Dicks And Cum Out Of Two Holes
Ancient platypus-like fossil could rewrite the history of egg-laying mammals
