
Kangaroo
Boxing champ with built-in trampolines.
Kangaroo vs Gazelle
Tonight's science rumble is set in the visitor lawn, now closed for SCIENCE. No snacks were harmed.
Kangaroo
Macropus rufus
Kangaroos cannot hop backward. The contract with physics is one-way.
Grasses and shrubs. They are hoppy lawn mowers.
Gazelle
Eudorcas thomsonii
Thomson's gazelles can keep a fast pace longer than a cheetah's sprint lasts.
Short grass. They like the lawn freshly mowed by bigger grazers.
Who do YOU think wins?

Gazelle
A spring with horns and a stotting hobby.