When I left my Tame wolf outside in the rain for about 5 mins to work on a project in the same world and I came back to notice that it was tame but it had the eyes of an untamed wolf

When I left my Tame wolf outside in the rain for about 5 mins to work on a project in the same world and I came back to notice that it was tame but it had the eyes of an untamed wolf. Here's a screenshot.In the screenshot it's the Tame wolf to the far left.