Could giant kangaroos hop? These conclusions were based on results from scaling up modern kangaroos, which the research team in the new study believes are misleading. The team combined measurements from living kangaroos with evidence from fossil material to discover that giant kangaroos may have been able to hop. However, giant kangaroos probably did not hop across distances like today’s kangaroos. “This likely made giant kangaroos slower and less efficient hoppers, better suited to short bursts of movement rather than long-distance travel.