Why Are Sloths Slow?

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

All About Super Slow Sloths

Why does a sloth move so slowly?  Join us today as we learn about the life of a sloth.

Sources: 

<a href="https://slothconservation.com/scientific-resource/reproductive-biology-postnat ...

Everyone knows sloths are super slow, but do you know they’re slow because their bodies produce an astoundingly small amount of energy? And did you know that might be an adaptation that protects them from predators? Sloths are awesome and we prove it in this classic episode.</ ...

Many people may have a passing familiarity with the slow-moving sloth, especially with their recent explosion in pop culture, but there is so much more to the sloth than most people realize. Casey and Sara discuss some of the incredibly unique features of sloths, and also take a ...  Show more

Sloths, snails and salamanders, when it comes to slow animals there's a bunch of different animals to choose from. But there's one animal that stands out above all the rest when it comes to being very ... very ... slow. But what animal is it? Mindy and Guy make their way down to ...  Show more