Regal Horned Lizards fight!
Regal horned lizards (Phrynosoma solare) use visual cues to attract mates during breeding season, which is from June to August:
Head bobbing: Males bob their heads up and down quickly to show interest in a female
Tail wagging: Females may wave their tails to reject males
Swollen tail base: Males develop a swollen tail base during breeding season
Bright colors: Some lizards can change color to attract mates