Following is a transcript of the video. Narrator: If there's one thing you know about sloths, it's that they're, well, slow. But that doesn't mean they're boring. In fact, sloths are one of the ...

Sloths are known for how slowly they move, but their slow speed isn't just a funny quality they have— it's part of why their species has survived for 64 million years. Following is the text of ...

That was when it met this big dog. When this sloth sensed danger, it froze. Suzi was fearful, as she remarks how 'dogs often attack sloths'. Fortunately, this particular dog did no more than sniff.