How do you tell the differences between a male and female rattle snake?

Male and female rattlesnakes can be distinguished by several physical traits. Males typically have larger, thicker bodies and longer tails relative to their size, as their tails contain the hemipenes used for reproduction. Additionally, males often exhibit more vibrant coloration and patterns compared to females. The presence of a rattle is not a reliable indicator of sex, as both genders can have them.