Here is an interesting bug reported in the Google Web Search Help forums.

Open up your smart phone, go to Google Sweden, search for [dog] and then click in the images tab at the top (it is the second one at the top). Take notice of the first result and then click on it. Notice a different image comes up?

Here is a picture:

This issue was first reported 10 days ago and since then there haven’t been any responses by a Googler. A few other searchers said they noticed the same issue.

This is not an issue on Google US and some other Google properties.

Forum discussion at Google Web Search Help.