wallaroo

is likely misspelled.

has no English definition.

As a noun wallaroo

is any of three closely related species of moderately large macropods, intermediate in size between the kangaroos and the wallabies.

As nouns the difference between wallaroo and kangaroo

is that wallaroo is any of three closely related species of moderately large macropods]], intermediate in size between the kangaroos and the [[wallaby|wallabies while kangaroo is a member of the macropodidae family of large marsupials with strong hind legs for hopping, native to australia.

As a verb kangaroo is

to practice kangaroo care on an infant; to hold a premature infant against the skin.

As nouns the difference between taxonomy and wallaroo

is that taxonomy is the science or the technique used to make a classification while wallaroo is any of three closely related species of moderately large macropods, intermediate in size between the kangaroos and the wallabies.