Depends on the pet. MOST pets to not have ANY fingers.
Cats may lick your fingers when you pet them as a sign of affection or to groom you, as they would groom themselves or other cats. It can also be a way for them to show trust and bond with you.
I have 5 fingers
5
TEN fingers
ten fingers
You can rub your fingers over the mouse and then examine your fingers in a bright light. You can see powdery white flecks on your fingers and if your eyes are good, you can see them move. If in doubt, use a magnifying glass and it will be obvious.
He has 6 fingers.
10 fingers
You put to fingers
2 fingers.
The same number of fingers you have.
How many fingers is "combien de doigts ?" in French.