In Britain, as the country gets hotter because of global warming, animals will move further and further north so they can live in conditions they like.
Eventually they will reach Scotland, and when there is nowhere further north to go they may begin to die out.
Small animals most affected
For many creatures already living in Scotland, and in north Wales too, a rise in temperature may be the beginning of the end for them.
The changes are most likely to affect small animals like birds and butterflies, because their small bodies will find it harder to cope with the changes.