How does ambient temperature regulate *C. molossus* daily activity schedule?

It shifts to primarily nocturnal activity during intense summer heat

The daily behavioral rhythm of *Crotalus molossus* is significantly dictated by the need for thermoregulation, meaning they adjust their activity based on environmental temperatures. During periods when the weather is moderate, they are typically active during the daylight hours, displaying diurnal behavior. However, as the summer heat intensifies, the risk of overheating becomes a major constraint. To avoid these potentially dangerous thermal extremes, the snakes actively change their schedule, becoming predominantly active during the cooler nighttime hours, which is defined as nocturnal behavior. This flexibility allows them to utilize foraging opportunities while minimizing exposure to peak daytime heat.