L3: Misuses of Apostrophe: Don’t use an apostrophe for -s ending that are not meant to indicate possession, such as with plurals, or for any other reason than those listed above.
Incorrect: The horse’s ran around the field.
Correct: The horses ran around the field.
Correct: The horse’s saddle is brown.
Incorrect: There are too many baby’s in the nursery
Correct: There are too many babies in the nursery.
Correct: I found three babies in the baby’s room.