Which consonant do you need?

As we were headed out the driveway this morning, the conversation in the backseat was quite intriguing. Ruby commented she’d seen something in the yard.

“It’s not a cow and it’s not a horse. I think it’s a doose.”

Sterling replied, quite confused, “A doose?!”

“No, a doose. Da Da Da Doose! Or a deese. It can be either one.”

“Deese?”

“No! Da da da deese!”

“Geese, Sterling. Goose.” I said.

“Oh! Geese and goose!”

“That’s what I said!” Ruby argued.

Oh, and by the way, it was a turkey.