All metals experience thermal expansion, meaning they expand when heated and contract (shrink) when cooled. This is a fundamental property of materials.

However, there are some metals that exhibit anomalous thermal expansion in certain temperature ranges. For example:

* Water actually expands when cooled from 4°C to 0°C, which is why ice floats. This is not a metal, but a good example of anomalous behavior.

* Some alloys might have very small shrinkage rates when cooled, but they will still shrink.

It's important to note that even though the shrinkage might be very small, it is still present.