Don't plan on making a fuzzy otter army or Otterman Empire, unless you have a lot of fish income. Upping oxygen and melee may boost insulation, but with the level 55 (88 after tame) I got last night, it was only 12 hours before his food stat was dropping... already had one starve to death after 2 days of not playing.
Helpful Tip: Did you know you can hatch eggs using these mfs? First, tame 3 otters, place them in a triangular shape with the egg in the center, then BOOM!! u got yourself a baby dino. Nature's incubator.
When leveling up or mutating your otter put it’s levels at a 2-1 ratio into melee damage and health. Melee damage allows your Otto to keep you warm while on your shoulders better and health allows your pet to survive longer. Don’t level weight because if it is encumbered it doesn’t matter because it doesn’t move