what is the difference between its and it's
'Its' is the possessive form: The dog wanted to catch its own tail.
'It's' equals: it is. remember, the apostrophe stands for a missing letter(i) in this case. For example: It's my birthday today.
'It's' equals: it is. remember, the apostrophe stands for a missing letter(i) in this case. For example: It's my birthday today.