What does Otter look like on Samsung?

On Samsung it is the design shipped in One UI 8.5, shown above at full size. Older revisions are listed beneath it.

When did Samsung add Otter?

Samsung first drew Otter in One UI 1.5, released August 22, 2019.

Samsung Electronics has shipped 14 versions of Otter. Each is dated, so you can see when the design changed.

Samsung One UI 8.5

This is the design Samsung introduced in One UI 7.0, shipped again unchanged. It was not redrawn for this release.

✳ marks a release that redrew this emoji. The rest re-shipped the design unchanged.

What does Otter look like on Samsung?: On Samsung it is the design shipped in One UI 8.5, shown above at full size. Older revisions are listed beneath it.
When did Samsung add Otter?: Samsung first drew Otter in One UI 1.5, released August 22, 2019.
How many times has Samsung redrawn Otter?: Samsung Electronics has shipped 14 versions of Otter. Each is dated, so you can see when the design changed.