A singular possessive noun shows ownership by one person or thing.
Add an apostrophe (') and s to make most singular nouns to show possession.
Coby's tent is shaped like a van.
We saw the dog's teeth when she smiled.
Sasha's feet were full of sand.
A plural possessive noun shows ownership by more than one person or thing.
To form the possessive of a plural noun ending in s or es, add only an apostrophe (').
To form the possessive of a plural noun that does not end in s, add an apostrophe and s ('s).
The foxes' home is called a den.
The children's books were very interesting.
The elephants' tusks are very valuable.