They are 16 to 21 inches long and weigh 5.5 to 11 pounds. The quokka has a stocky build with short, rounded ears. Their fur is brownish-grey with a lighter underbelly. The quokka has a short tail ...

He has authored several books on quantum physics for various age groups, including the best-selling “Quantum Physics for Babies.” The Quokka, named after a photogenic Australian marsupial ...