Let's learn
Dog Show
Look! That's my dog.
Yes. It’s your dog.
The dog is yours.
 
his dog - his
her dog - hers
their dog – theirs
my dog – mine
our dog  –  ours
It’s our dog.
The dog is ours.
Zoom’s dog
 
Whose book is that? 
It's Amy's book. 
Ah! The book is hers.
Amy
It's her book. 
The book is hers.
John
It's his book. 
The book is his.
John and Amy
It's their book. 
The book is theirs.