Both wallabies and kangaroos are known for their method of getting around: hopping. Both animals are also marsupials, meaning they carry their young in a pouch. It would make sense that they are related—and they are—to an extent. These animals are within the same taxonomic family and sometimes the same genus.
However, they do have their differences. The biggest one of these differences would be size with the kangaroo averaging around 5 feet, 9 inches and the average wallaby standing only 1 to 2 feet tall. Of course, this is just an average and either animal can be much larger or smaller.