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Ectrodactyly, also known as split-hand malformation, is the congenital absence of one or more central digits of the hands and feet. Consequently, it is a form of oligodactyly. News anchor Bree Walker is probably the best-known person with this condition, which affects about one in 91,000 people.
Groups of kangaroos, also known as mobs, are led by one alpha male who may have had a serious battle to earn his position. Mobs can be made of just a few individuals, or over 100.
Digitigrade and unguligrade animals have relatively long carpals and tarsals, and the bones which correspond to the human ankle are thus set much higher in the limb than in a human. In a digitigrade animal, this effectively lengthens the foot, so much so that what are often thought of as a digitigrade animal's "hands" and "feet" correspond to ...
Eastern grey kangaroos are polygynous which means that one male mates with multiple females. Males do a lot of intraspecific competition for mates which includes male-male fights to determine dominance between the two males. When a dominant male finds a female in estrus, he will court the female and eventually they copulate. [23]
The word kangaroo derives from the Guugu Yimithirr word gangurru, referring to eastern grey kangaroos. [14] [15] The name was first recorded as "kanguru" on 12 July 1770 in an entry in the diary of Sir Joseph Banks; this occurred at the site of modern Cooktown, on the banks of the Endeavour River, where HMS Endeavour under the command of Lieutenant James Cook was beached for almost seven weeks ...
The zoo said this is common behavior.
How many legs does a kangaroo have? Four, right? Well, according to new research, the right answer is actually five. Yes, five. A study published in Biology Letters online Thursday says, when ...
The arrangement of the pouch is variable to allow the offspring to receive maximum protection. Locomotive kangaroos have a pouch opening at the front, while many others that walk or climb on all fours open in the back. Usually, only females have a pouch, but the male water opossum has a pouch that protects his genitalia while swimming or running.