Who's he?
He's my father/ dad.
Who are they?
They are cousins.
What are they?
They are pets.
Who's he?
He's my uncle.
Who's he?
He's my grandfather/ grandpa.
What is it?
It's a pet. (It's a dog.)
Who's she?
She's grandma/ grandmother.
Who's she?
She's my aunt.
Who's she?
She's my mom/ mother.