A Startling Defense Mechanism
The Regal Horned Lizard, found in North America, has developed an unusual way to escape predators. When threatened, it can restrict blood flow from its head, causing pressure to build until small blood vessels near its eyes rupture. This results in a sudden spurt of blood, shooting up to a meter away.
Confusing Predators
This blood-squirting ability serves multiple purposes. The sudden spray can startle predators like coyotes, bobcats, and birds of prey, giving the lizard a chance to escape. In some cases, the blood contains chemicals that have been found to deter certain mammals, making the attack even more effective.
More Than Just Blood
Beyond this defense, the Regal Horned Lizard has other survival tactics. It blends with its surroundings using a spiky, camouflaged body and can remain motionless for long periods. If discovered, it flattens itself against the ground, making it harder to grab.
An Evolutionary Oddity
While other horned lizards rely on camouflage and speed, the Regal Horned Lizard’s blood-squirting ability is one of the most unique defenses in the animal kingdom. It remains a subject of scientific study due to its effectiveness against predators.
The Regal Horned Lizard has a jaw-dropping trick to survive: it shoots blood from its eyes! This bizarre defense mechanism helps it escape predators, making it one of nature’s most fascinating oddities.🧵👇 pic.twitter.com/pHWmlrCkbB
— Detective Tiger’s Stories (@TigerDetective) March 9, 2025