
Llama
A woolly sentry with a spit-screen special.
Llama vs Tortoise
Tonight's science rumble is set in the visitor lawn, now closed for SCIENCE. No snacks were harmed.
Llama
Lama glama
Llamas hum to chat. A loud hum can mean worry.
Grass and hay. They are grazing guards who work for snacks.
Tortoise
Chelonoidis niger
Giant tortoises can live more than 100 years.
Cactus, grass, and island plants. They are living lawn mowers with a 100-year warranty.
Who do YOU think wins?

Tortoise
A walking bunker that outlives arguments.