Macropodaphobia.
The 3 letter word for a group of kangaroos is mob.
There is currently no term for the fear of kangaroos.
No, kangaroos is a common, concrete noun, the plural form of the singular kangaroo. A collective noun is a word for a group of things; the collective nouns for kangaroos are a troop of kangaroos or a mob of kangaroos.
Kangaroos are simply called "kangaroos". Commonly, the word is shortened to "roo".
rags
The word "marsupials" covers kangaroos, koalas and wombats, as well as around 250 more species.
A fear of ostriches is not psychologically-recognized at this time. However, there are individuals who do suffer from this. You can read one individuals struggle with this fear at the below link. http://www.unusualphobias.com/ostridge.html
kangaroos
Currently, there is no word for a fear of smackheads.
Fear
kangaroos