Tag Archives: search and rescue

A chicken-flavored electrolyte drink could help sniffer dogs stay hydrated

The first comparison of three common hydration methods for sniffer dogs shows that while all are effective, dogs drink more and are more hydrated when given a chicken-flavored electrolyte drink compared to plain water or when injected with electrolytes under the skin. The study, published in open-access journal Frontiers in Veterinary Science, also shows that the dogs did not suffer from a buildup of electrolytes from the drink, suggesting that electrolyte drinks are a safe hydration alternative for sniffer dogs, who are at risk of heat stroke in hot weather.

Working dogs, such as search and rescue dogs or police dogs, are crucial assistants when authorities respond to disasters or check for contraband at border crossings. These dogs often work in challenging environments, and can sometimes exert themselves to the point of exhaustion and heat stroke. In fact, hot weather can be dangerous for working dogs, as dogs don’t sweat much and rely on panting to cool themselves, meaning they can overheat easily.

detection dog

The risk of heat stroke increases with dehydration, so one effective way to help working dogs stay safe is to keep them hydrated. However, there are different ways to do this. “People use different techniques to hydrate working dogs,” says Cynthia Otto of the University of Pennsylvania, who was involved in the study. “Dog handlers disagree about the most effective method, and since there was no data on the safety or effectiveness of each technique, we wanted to provide some clarity.”

The classic hydration technique is to provide free access to plain drinking water. A second technique involves delivering water and electrolytes through a needle under the skin, which is known as subcutaneous hydration. Drinks containing electrolytes, such as sodium and potassium, are a third option, but these are controversial. Such drinks make sense as a rehydration aid for humans, as we lose electrolytes when we sweat. However dogs sweat very little, leading critics to say that the drinks could cause an unhealthy buildup of electrolytes in dogs.

The research team investigated these three common hydration strategies in a group of Border Patrol sniffer dogs who inspect vehicles at the Texas border, during the hot summer months. The team took a variety of measurements for each dog, including their hydration levels, fluid intake and work performance.

Happily, all three hydration strategies appear to be effective, and the dogs showed similar behavior, body temperature, and work performance regardless of the way they were hydrated. “In this controlled setting, all the hydration techniques were safe and effective,” says Otto.

However, dogs receiving a chicken-flavored electrolyte drink drank significantly more fluid and had greater hydration levels. Interestingly, these dogs did not suffer from a buildup of sodium, a component of electrolyte drinks that could have negative effects in the body in large quantities. The dogs who drank electrolytes excreted the sodium in their urine, meaning their blood levels remained normal. Overall, the dogs handled the electrolytes well, suggesting they are a safe and effective hydration method.

These results surprised the researchers, as a previous study had reported that dogs who were offered a non-flavored electrolyte drink, drank very little of it. The chicken flavoring may have been key, making the dogs think they were having a tasty treat, but the team will need to investigate this further.

“If a dog is reluctant to drink, then a highly palatable flavored electrolyte solution may give them a boost,” says Otto. “However, these are healthy dogs in a controlled environment, and we don’t know if all electrolyte or flavoring approaches are created equal, so we will need to do further work.”

Journal reference:  Cynthia M. Otto, Elizabeth Hare, Jess L. Nord, Shannon M. Palermo, Kathleen M. Kelsey, Tracy A. Darling, Kasey Schmidt, Destiny Coleman. Evaluation of Three Hydration Strategies in Detection Dogs Working in a Hot Environment. Frontiers in Veterinary Science, 2017; 4 DOI: 10.3389/fvets.2017.00174

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Search and rescue dogs do their job despite travel stress

When disaster strikes, you want the very best tools, functioning at their peak. In the case of catastrophic earthquakes, tornadoes, or even bombings in war zones, those tools are search and rescue dogs. But researchers have found that getting dogs to disaster sites can add to the animals’ stress.

“We’ve spent $16 billion in this country trying to come up with a machine that can sniff better than dogs, and we haven’t done it yet. Search and rescue animals can save lives, protect our soldiers in the field, and locate survivors after a disaster. We want to know how we can manage them so we can protect their performance, because their performance impacts human lives. That’s the reason behind what we do,” says Erin Perry, an assistant professor in the Department of Animal Science, Food and Nutrition at Southern Illinois University.

Perry, who has also been a canine handler in the Department of Homeland Security for the past 14 years, teamed up with University of Illinois animal scientist Kelly Swanson and others at U of I to learn how stress affects the animals’ performance on the job.

Search and rescue dogs fly on a moment’s notice to the site of a disaster, where they are expected to perform at the top of their game. But, just like for humans, flying can be stressful for dogs. The research team designed two preliminary studies to evaluate the effect of air travel stress on the animals’ physiology and job performance.

“Some dogs are like, ‘I’ve flown before, no big deal,’ but others, even if they’ve flown before, still show stress behaviors, and can have elevated body temperature or diarrhea,” says Swanson, Kraft Foods Human Nutrition Endowed Professor in the Department of Animal Sciences and the Division of Nutritional Sciences at U of I.

Dog owners may be familiar with the tendency towards loose stools when their animals are stressed. One of the reasons for that may be a stress-induced change in gut physiology and shift in the gut microbiome, the community of microbes that inhabit the mammalian gut. Paired with a more permeable [or leaky] gut lining, also triggered by stress, “bad” microbes can gain an advantage and cause upset stomachs. These symptoms have been observed in search and rescue dogs when traveling to a work site, but no one had ever studied the dogs’ microbiome.

In one of the studies by Perry and Swanson’s team, search and rescue dogs were flown for 2.5 hours in the cabin of a commercial airliner to the job site. In the other, dogs were “hot loaded” into a helicopter – blades whirling – for a quick 30-minute flight to the site. The team looked at slightly different factors in each study, but for both, they examined changes in the makeup of the microbiome and performance on the job.

Helicopter Study dogs approaching_1

Dogs being loaded into a helicopter

The helicopter flight caused spikes in body temperature and the stress hormone cortisol, but the researchers didn’t observe changes in the makeup of the dogs’ microbiomes. Dogs that entered an airport, went through security, and flew for a longer period on the commercial flight showed an interesting microbial shift.

“Microbial beta diversity, which is a measure of the presence and abundance of bacterial taxa, was different between dogs that traveled compared to those that did not. Travel led to greater relative abundances of Clostridia and Bacteroidaceae populations, two of the more predominant microbial groups in the gastrointestinal tract,” Swanson explains. He says more research is needed to understand how such changes may impact the long-term health of search and rescue dogs.

But the most impressive finding in both studies was the fact that there was no effect of air travel stress on the dogs’ job performance. “They showed behavioral stress, their gut was completely turned upside down, their bloodwork showed significant effects, and it didn’t matter. They still went to work and performed beautifully,” Perry says. “Even though we see physiological impacts on these dogs, they’re such amazing athletes that they overcome the physical and environmental stress and just do their job.”

Although travel didn’t impact the dogs’ performance in these preliminary studies, the researchers emphasized that stress can occasionally cause search and rescue dogs to miss work. But gaining new insight into canine stress responses, particularly the way stress affects the microbiome, may pave the way towards potential solutions for both working and companion animals.

“We’ve all owned dogs that were scared of lightning, vacuum cleaners, those innocuous day-to-day experiences,” Perry says. “Having a better understanding of what causes stress and how to compensate for it helps every dog, not just the ones that are out there saving lives.”

Swanson adds, “These small studies are just a starting point. In the future, we hope to apply these findings to larger studies focused on various stressor types and a longer duration of stress, similar to that experienced in the field during times of emergency. Our goals will be to develop and evaluate nutritional interventions and/or management strategies that avoid negative physiologic effects and maintain performance.”

Source:  University of Illinois media release

The 9/11 rescue dog memorial

September 11th is a date that will be forever remembered for the loss of life in the worst act of terrorism ever experienced on United States soil.  While the victims and first responders have been honored in many ways, the search and rescue dogs have not.

Until now.

In the city of West Orange, New Jersey, there is a new statue that pays homage to the 350 search and rescue dogs who worked at the World Trade Center and Pentagon.  Made of bronze and weighing 5,000 pounds, it sits on a granite base.  The official dedication was held on 17 August 2016.

9_11 dog statue

In a media statement marking the dedication, Newark Public Safety Director Anthony Ambrose said, “Search dogs covered 16 acres of land at Ground Zero covered with metal and debris, and went where humans could not go.  This is a fitting way to remember how many families gained some sort of closure because of the work by dogs.”

The statue was funded through corporate donations.  It is located in the park in New Jersey where many residents gathered to witness the horror of the World Trade Center attacks, fire and collapse on September 11, 2001.

9_11 dog statue with plaque

Source:  NJ.com

Bretagne, the 9/11 dog, celebrates her 16th birthday

Bretagne is the last known surviving search and rescue dog from 9/11.  That’s special.  Here is how she celebrated her day…

Dog to human communication supported with technology

North Carolina State University researchers have developed a suite of technologies that can be used to enhance communication between dogs and humans, which has applications in everything from search and rescue to service dogs to training our pets.

“We’ve developed a platform for computer-mediated communication between humans and dogs that opens the door to new avenues for interpreting dogs’ behavioral signals and sending them clear and unambiguous cues in return,” says Dr. David Roberts, an assistant professor of computer science at NC State and co-lead author of a paper on the work. “We have a fully functional prototype, but we’ll be refining the design as we explore more and more applications for the platform.”

Dr David Roberts with one of his associates  Photo courtesy of North Carolina State University

Dr David Roberts with one of his associates. Photo courtesy of North Carolina State University

The platform itself is a harness that fits comfortably onto the dog, and which is equipped with a variety of technologies.

“There are two types of communication technologies,” says Dr. Alper Bozkurt, an assistant professor of electrical and computer engineering at NC State and co-lead author of a paper on the work. “One that allows us to communicate with the dogs, and one that allows them to communicate with us.”

“Dogs communicate primarily through body language, and one of our challenges was to develop sensors that tell us about their behavior by observing their posture remotely,” Roberts says. “So we can determine when they’re sitting, standing, running, etc., even when they’re out of sight – a harness-mounted computer the size of a deck of cards transmits those data wirelessly.

“At the same time, we’ve incorporated speakers and vibrating motors, called haptics, into the harness, which enable us to communicate with the dogs,” Roberts adds.

“We developed software to collect, interpret and communicate those data, and to translate human requests into signals on the harness,” says Rita Brugarolas, an NC State Ph.D. student and co-author of the paper.

The technology also includes physiological sensors that monitor things like heart rate and body temperature. The sensors not only track a dog’s physical well-being, but can offer information on a dog’s emotional state, such as whether it is excited or stressed.

These technologies form the core of the technology platform which can be customized with additional devices for specific applications.

“For example, for search and rescue, we’ve added environmental sensors that can detect hazards such as gas leaks, as well as a camera and microphone for collecting additional information,” Bozkurt says.

Other applications include monitoring stress in working dogs, such as guide dogs and other service dogs.  Physiological and behavioral sensors will provide insight into a dog’s mental and emotional state.

“This platform is an amazing tool, and we’re excited about using it to improve the bond between dogs and their humans,” says Dr. Barbara Sherman, a clinical professor of animal behavior at the NC State College of Veterinary Medicine and co-author of the paper.

The research team has published their research in the paper entitled Towards Cyber-Enhanced Working Dogs for Search and Rescue

Source:  North Carolina State University media release

FIDO Cam

Watch out criminals.  You’re on FIDO Cam!

Made in the UK by the Military and Law Enforcement Division of Industrial Television Ltd, FIDO Cam was developed to assist police SWAT units which needed to check inside buildings before their teams entered.  The apparatus has also been used in drug busts and in search and rescue operations.

FIDO Cam is mounted on trained police and rescue dogs as seen here:

FIDO Cam

The company estimates that 70% of the police units in the UK own the gear; when activated, the camera sends a live feed of what ever the dog is seeing back to the handler.

FIDO Cam 2

Camera footage can also be used in court as evidence.

I wonder how long even a highly trained dog will wear the device (because it doesn’t look very comfortable).

At over £10,000 per unit, one thing is for sure:  it’s unlikely that these cameras will be purchased by dog owners who want to know what their dog gets up to when they are not at home!

US stamps in honour of working dogs

The US Postal Service has a set of four stamps honouring service dogs.

The Dogs at Work set shows a guide dog assisting a blind woman, a tracking dog that is following a scent, a therapy dog visiting with an elderly woman and a search and rescue dog standing in a field.

In releasing the stamps for sale, the USPS said “Dogs have become more than just best friends — they’ve also become our coworkers. From guide dogs to therapy dogs to search and rescue dogs, these stamps from the U.S. Postal Service® honor the enduring partnership between dogs and people.”

“Currently, some 10,000 guide dogs in the U.S. and Canada serve as an extra set of eyes for people who are blind. Therapy dogs, chosen for their friendly dispositions, bring comfort and joy to the elderly and the ill. Dogs that work with police and military personnel are trained to detect drugs, guns, and explosives. Search and rescue dogs speed up search efforts, increasing the odds of survival for disaster victims.

Artist John M. Thompson created original paintings for the stamps, which were designed by art director Howard E. Paine. The Dogs At Work stamps are being issued at a 65-cent denomination, which is the price for single-piece retail First-Class Mail weighing more than one ounce and up to and including two ounces.”