? Shake, shake, shake — The rattles, or buttons, at the end of a timber rattlesnake's tail are made of keratin. When threatened, the snake will shake the end of its tail, causing the buttons to press against each other, resulting in the distinct rattling sound. Most timber rattlesnakes are... See More

? Shake, shake, shake — The rattles, or buttons, at the end of a timber rattlesnake's tail are made of keratin. When threatened, the snake... See More