The Red Diamond Rattlesnake is a rattlesnake species in the southwestern United States and Baja California in Mexico. It has a unique reddish-brown or pinkish hue and diamond-shaped patterns on its back. 

Moreover, it can grow up to five feet long and thrive in various habitats. However, it prefers open, sandy environments over rocky terrains. 

It primarily feeds on small mammals but occasionally eats birds, lizards, or snakes. Likewise, it is most active during cooler hours due to its nocturnal nature. Still, it may bask in the sun during colder seasons.