"T" for Turtle

This made me laugh:

Moses came to me with a piece of paper he had cut out in a sort of tombstone shape, with little squares drawn all over it and asked me to guess what it was.

A cookie?
No.
A phone?
No.
A remote control?
No.
I give up!

"I'll give you a hint, Mom." Moses said. "I'll tell you what letter it starts with."

Ok.

"Um, hmmm.....what letter does "turtle" start with?"

"T."

"Okay, it starts with 't'."

Is it a turtle?

"Yes!!! Mom, how did you guess?!"