5 clips name both of them

331,045 views between them.

Blue whale outweighs Brown-throated sloth 37600× — 149,000 kg against 4 kg.

Tale of the tape

Body mass

3.96 kg

🦥 Brown-throated sloth · COMBINE

149,000 kg

🐋 Blue whale · COMBINE

Body length

0.75 m

🦥 Brown-throated sloth · COMBINE

30 m

🐋 Blue whale · COMBINE

Maximum lifespan

27 yr

🦥 Brown-throated sloth · COMBINE · estimated

110 yr

🐋 Blue whale · COMBINE

Bars are sized against the larger of the two figures.

Animals caught on camera

Real footage of the animals on this site — hunting, fighting, and getting on with it.

Shared ancestry

The closest group they share is Theria (subclass), home to 9,319 species.

They last shared an ancestor about 87 million years ago.

Estimates range from 78 to 117 million years; the figure above is the middle estimate.

About this estimate

Dates from Upham, Esselstyn & Jetz 2019, PLoS Biology 17:e3000494 (CC0).