One clip names both of them

31,958 views between them.

American alligator outweighs Eurasian otter 19× — 150 kg against 7.8 kg. Both figures are averages across males and females.

Tale of the tape

Body mass

150 kg

🦎 American alligator · AnAge

7.81 kg

🦦 Eurasian otter · COMBINE

Body length

4.6 m

🦎 American alligator · ReptTraits

0.75 m

🦦 Eurasian otter · COMBINE

Maximum lifespan

77 yr

🦎 American alligator · AnAge

22 yr

🦦 Eurasian otter · 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 Tetrapoda (superclass), home to 51,389 species.

We know what their shared ancestor was, but not when it lived — no dated family tree spans both of them yet.