Here's a comparison:
* Wolverine:
* Average weight: 25-60 lbs (males), 15-40 lbs (females)
* Length: 2-3 feet (excluding tail)
* Otter: (depending on the species)
* Average weight: 10-40 lbs
* Length: 2-5 feet (including tail)
While some otter species can reach similar weights to smaller wolverines, wolverines are generally much heavier and have a more robust build.