Spot the differences

In this game you can try to find the differences in the two pictures. Most of the pictures are supposed to have ten differences, but sometimes Granddad couldn’t find all of them. See how many you can find.

Granddad only found 9 differences. How many can you find?

Granddad only found 7 differences. How many can you find?
Granddad only found 8 differences. How many can you find?
Granddad only found 8 differences. How many can you find?
Granddad only found 8 differences. How many can you find?
Granddad only found 9 differences. How many can you find?
Granddad only found 9 differences. How many can you find?
Granddad found 12 differences, that’s lot! How many can you find?