The Secret to Cheetahs’ Super Speed

Why did T. Rex have such tiny arms? That’s what our listener Nora wants to know. We’re going to find out why the biggest, most powerful predator to ever walk the Earth did it with a teeny tiny set of arms. Scientists have been coming up with answers for this question for decades ...  Show more

In this final mailbag episode of Summer 2026, Marshall and Lindsay address two listener questions, and learn about a surprising twist of evolution. Plus, listener reviews and comments! To get an invite to the next Tumble meetup, as well as receive birthday shout outs and ad free ...  Show more

Adam Hart investigates the fastest land animal in the world – the cheetah! Built for high-speed chases, these spotted cats are slender, with semi-retractable claws for good grip and a flexible spine plus a long tail for balance and manoeuvrability. Cheetahs rely on speed over bru ...  Show more

Zoologist Ben Garrod and veterinary surgeon Jess French delve deep into some amazing internal anatomy to unravel the secrets to survival of some of nature’s iconic animals.They begin with one of the rarities of the cat family – the cheetah, which at just under two metres long, is ...  Show more

Cheetah drops by to talk about life as the world's fastest land animal. Who will win when Kyle's dad challenges cheetah to a race? 

Chentle is the fastest of all the cheetahs, but she also wants to be the best climber of all the ninjas and the best flyer of all the rocket ship houses. Can she be the best at everything, and will she be happy when she leaves everyone else in her dust?  Lessons include: being m ...  Show more