But which Mommy am I?

Mommy? says Mac.
Yes, Mac? says I.
No! says Mac.

Mommy? says Mac.
Yes, Dinosaur Mac? says I.
No! says Mac.

Mommy? says Mac.
Yes, Dragon Mac? says I.
No! says Mac.

Mommy? says Mac.
Yes, Kitty Cat Mac? says I.
No! says Mac.

Mommy? says Mac.
Yes, Turtle Mac? says I.
No! says Mac.

Mommy? says Mac.
Yes, Lightening? says I.

Mac smiles, and continues with story. Phew.

It's a bit easier with a wee clue. Sometimes it's first time lucky:

Mommy Bird? says Mac.
Yes, Little Bird? says I.

or
Mommy Pig? says Mac.
Yes, George? says I.