The otter in the OP is a river otter (probably american river otter)—I’m like 90% sure they do not have pockets. The otter in the comment is a sea otter (in case the watermark didn’t give that away)—they have skin folds that’s often described as pockets near-ish to the armpit.
Neither of them are marsupials—they both belong to the family Mustelidae (which also include badgers, weasels, etc).
So it’s an armpit? Or is it a marsupial thing?
The otter in the OP is a river otter (probably american river otter)—I’m like 90% sure they do not have pockets. The otter in the comment is a sea otter (in case the watermark didn’t give that away)—they have skin folds that’s often described as pockets near-ish to the armpit.
Neither of them are marsupials—they both belong to the family Mustelidae (which also include badgers, weasels, etc).