Grandmother Called in a Bigfoot

Grandmother Called in a Bigfoot
Many moons ago, on the Glover River in McCurtain County, Oklahoma, my grandparents were at a fishing spot they called the Big Hole. They were busy catfishing when they heard a yell from up the river. For the fun of it, my grandma decided to mimic the sound and yelled right back. 
Not long after, they heard a huge splashing from up the river coming toward them, as if a large animal was quickly approaching. As the splashing sound got closer, they started feeling uneasy and decided to pack up and leave. 
My grandma went ahead to the truck to start it up so they could get out faster, and heard some leaves rustling in the woods next to her. She rejoined my grandpa to help with the packing, and once they got everything loaded up, they saw a huge shadow in the trees. They didn’t wait around to find out what it was and got out of dodge. 
She's told me this story many times throughout my life, and I've always figured it was Bigfoot. But I never paid any mind to what the yell could have been until this weekend, when I visited them, and played the Ohio howl recording. 
I had gotten her attention, and she called my grandpa over so he could hear it, too. My grandparents both said it was just like the sound they heard that day they were fishing at the Big Hole. 
Little did they know at the time, they had a near encounter with Bigfoot.

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