Uploaded August 2025 | Updated September 2026, 2 weeks ago

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Convergent evolution has resulted in all sorts of creatures evolving to look very similar to one another. One of the most fascinating examples is how many times things have evolved into sloths - sloth lemurs, chalicotheres, therizinosaurs, and various others all have similarities to sloths. Plus, modern tree sloths have convergently evolved with each other, too!

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0:00 - Intro
2:21 - Sloth Evolution
3:55 - Sloth Superfamily Megalocnoidea
5:46 - Sloth Superfamily Mylodontoidea
8:31 - Sloth Superfamily Megatherioidea
16:24 - Anatomical differences between two- and three-toed sloths
19:20 - Sloth Lemurs (Palaeopropithecidae)
21:56 - Megaladapis (Koala Lemur)
23:19 - Chalicotheres
25:32 - Therizinosaurs
28:25 - Slow Lorises
30:15 - Koala
31:25 - Honourable Mentions
33:33 - Outro