Science

Kung-fu kangaroo! Snakes foiled by super-fast leaps and mid-air ninja-style kicks 


Incredible footage reveals the moment a daring kangaroo rat escaped certain death in the jaws of a rattlesnake. 

Remarkable aerial acrobatics saw the rodent escape the predator by using its powerful hind legs to kung fu kick it away. 

Researchers set up a YouTube page showcasing the remarkable escapes orchestrated by the rats to emerge unscathed from various perilous situations. 

They managed to film the fleeting interaction which happened in less than the blink of an eye.  

Remarkable aerial acrobatics saw the rodent escape the predator by using its powerful hind legs to kick it away (pictured)

Remarkable aerial acrobatics saw the rodent escape the predator by using its powerful hind legs to kick it away (pictured)

Scientists had long been puzzled by how the rats defended themselves as they had been unable to film them due to their rapid movements in the dark.  

But the latest stunning footage reveals the seemingly defenceless rats have a kick that can send the snakes flying.

One video uploaded to the YouTube page shows a kangaroo rat successfully kicking a snake – which is then sent flying through the air and crashing feet away.

The footage published to the channel were also used as evidence in two studies published in Functional Ecology and the Biological Journal of the Linnean Society

The kicks solved a mystery that puzzled the team for years. They had even tested the blood for resistance to the snake venom.

Named after their long hind feet, the rats were shown to evade danger with impressive jumps and mid-air twists.

Researchers from University of California Riverside (UCR), San Diego State University, and UC Davis teamed for the project using the latest high-speed cameras.

After setting up a series of night-vision cameras in the desert, they discovered the rodents were fighting with their adversaries.

PhD candidate Malachi Whitford, of San Diego State University, said that previous cameras were insufficient to pick up rat jumps.

He said: ‘Our previous work used lower-speed cameras, and although it seemed as though snakes had successfully struck their prey, the movements of the animals at the moment of impact was too blurry to see details.’ 

Scientists had long been puzzled by how the rats defended themselves as they had been unable to film them due to their rapid movements in the dark. But the latest stunning footage reveals the seemingly defenceless rats have a kick that can send the snakes flying

Scientists had long been puzzled by how the rats defended themselves as they had been unable to film them due to their rapid movements in the dark. But the latest stunning footage reveals the seemingly defenceless rats have a kick that can send the snakes flying

Kangaroo rats' highly sensitive hearing allows them to hear low-frequency sounds and detect sudden surprise attacks, necessary for avoiding predators. They also have enlarged hindlimb muscles and thick tendons, allowing for the rapid vertical leaps and high accelerations

Kangaroo rats’ highly sensitive hearing allows them to hear low-frequency sounds and detect sudden surprise attacks, necessary for avoiding predators. They also have enlarged hindlimb muscles and thick tendons, allowing for the rapid vertical leaps and high accelerations

Kangaroo rats’ highly sensitive hearing allows them to hear low-frequency sounds and detect sudden surprise attacks, necessary for avoiding predators.

They also have enlarged hindlimb muscles and thick tendons, allowing for the rapid vertical leaps and high accelerations.  

Kangaroo rats are faster than the snakes and have a typical reaction time of around 70 milliseconds, with some recording times of just 38 milliseconds.

Associate Professor Timothy Higham, of UCR, said: ‘Both rattlesnakes and kangaroo rats are extreme athletes, with their maximum performance occurring during these interactions.

HOW DOES A KANGAROO RAT ESCAPE FROM A RATTLESNAKE?

The results suggest that kangaroo rats might amplify their power when under attack by rattlesnakes via ‘elastic energy storage.’

Mr Higham added: ‘Elastic energy storage is when the muscle stretches a tendon and then relaxes, allowing the tendon to recoil like an elastic band being released from the stretched position.

‘It’s equivalent to a sling shot – you can pull the sling shot slowly and it can be released very quickly.

‘The kangaroo rat is likely using the tendons in its lower leg – similar to our Achilles tendon – to store energy and release it quickly, allowing it to jump quickly and evade the strike.’

‘This makes the system excellent for teasing apart the factors that might tip the scale in this arms race.

‘These lightning-fast and powerful manoeuvres, especially when executed in nature, tell us about the effective strategies for escaping high-performing predators.

‘Those that are successful at evading the strike will suggest ways in which the kangaroo rat might be evolving in response to the intricacies of the predatory movements.’

Researchers documented the interactions using radio telemetry to track the hunting behaviour of free-ranging rattlesnakes during two studies over the course of two years.

They then placed high-speed cameras around the area to record snakes as they hunted in locations frequented by the ‘ninja’ kangaroo rats.

Associate professor Rulon Clark, of San Diego State University said that one of the rats’ skills was ‘reorientating’ in mid-air.

He said: ‘Kangaroo rats that responded quickly were frequently able to jump clear of the snake completely, leaving the serpent biting nothing but dust as the kangaroo rat rocketed 7-8 body lengths into the air.

‘But in perhaps the most surprising finding of our research, kangaroo rats that did not react quickly enough to avoid the strike had another trick up their sleeves.

‘They often were able to avoid being envenomated by reorienting themselves in mid-air and using their massive haunches and feet to kick the snakes away, ninja-style.’   



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