Horned Lizards: Reptiles that Cry Blood

28 January, 2021
Horned lizards defend themselves against their many predators mainly through immobilization and camouflage. However, they also have other tricks up their sleeve. Keep reading to find out more.
  • Sherbrooke WC. Middendorf III, CA (2001).  “Blood-Squirting Variability in Horned Lizards (Phrynosoma),” Copeia 2001(4), 1114-1122. https://doi.org/10.1643/0045-8511(2001)001[1114:BSVIHL]2.0.CO;2
  • Holte, A. E. & Houck, M. A. (2000). Juvenile Greater roadrunner (Cuculidae) killed by choking on a Texas horned lizard (Phrynosomatidae). The Southwestern Naturalist 45, 74-76. https://www.jstor.org/stable/3672556?seq=1
  • Sherbrooke, W. (2012). Negative oral responses of a non-canid mammalian predator (Bobcat, Lynx rufus; Felidae) to ocular-sinus blood-squirting of Texas and regal horned lizards, Phrynosoma cornutum and Phrynosoma solare. Herpetological Review, [online] 43(3): 386-391. Available at: https://www.researchgate.net/publication/286024808
  • Middendorf, G., & Sherbrooke, W. (1992). Canid Elicitation of Blood-Squirting in a Horned Lizard (Phrynosoma cornutum). Copeia, 1992(2), 519-527. Available at: http://www.jstor.org/stable/1446212