It seems there might be a little confusion with the term "kangaroo bear." In fact, there is no animal officially called a "kangaroo bear." Instead, you might be thinking of "koala," which is often informally referred to as a "koala bear," even though it is not a bear at all.
Koala (noun): A koala is a slow-moving, tailless marsupial from Australia. It has grey fur, large furry ears, and is known for living in trees, primarily feeding on eucalyptus leaves and bark.
While "koala" primarily refers to the animal, it can sometimes be used metaphorically in literature or conversation to describe someone who is slow-moving or relaxed.
There are no specific idioms or phrasal verbs directly related to "koala." However, you might encounter idiomatic expressions about being slow or lazy, like "slow as molasses," which could evoke the idea of a koala's slow movement.
Remember that "koala" is the correct term for this Australian marsupial. It's important to use the right name, especially in formal writing or discussions.