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Dr. Roy Madigan, D.V.M., is not just a veterinarian. He is one of the leading experts in canine Chagas disease in the United States.
 
• Founder of Vida Pharmacal, focused on breakthrough parasitic disease treatments
 • Filed the first veterinary drug patent for anti-T. cruzi activity in dogs
 • Principal scientist for the U.S. military working dog Chagas treatment study
 • Veterinary lead for the Texas Chagas Task Force alongside the CDC and UT Health
 • Pioneer in developing diagnostic and treatment protocols for infected dogs
 
Your pet is being treated by the same expert helping shape how Chagas disease is understood nationwide.

Get In Touch

Chagas disease progresses in stages. The earlier it is identified:
 
 • The more treatment options are available
 • The better heart damage can be managed
 • The higher the chance of improving quality of life
 
Waiting can mean irreversible cardiac damage.

Early Detection. Advanced Treatment. Led by One of the Nation’s Top Experts.

Do not wait for symptoms to appear.

Chagas disease is often silent early on, but warning signs may include:
 
 • Lethargy or decreased activity
 • Fainting or collapse
 • Irregular heartbeat
 • Difficulty breathing
 • Unexplained weight loss
 
If your dog spends time outdoors, lives in Central Texas, or has been exposed to insects, they may be at risk even without symptoms.

If your dog may have been exposed to kissing bugs, do not wait. Chagas disease can silently damage the heart before symptoms appear. Early diagnosis can make the difference.

At Central Texas Vet, we go beyond standard testing.
Dr. Madigan is actively developing advanced serologic testing methods to improve detection accuracy.
 
Your dog’s evaluation may include:
 
 • Comprehensive physical exam
 • Cardiac screening
 • Specialized blood testing for T. cruzi
 • Advanced diagnostics when needed
 
Early detection allows for better management and improved outcomes.

Chagas disease is caused by the parasite Trypanosoma cruzi, transmitted by “kissing bugs” commonly found in Texas.
Once infected, dogs may appear normal while the parasite attacks the heart and other organs.
 
Without intervention, Chagas can lead to:
 
 • Heart disease
 • Arrhythmias
 • Sudden death

Questions? We Have Answers

If your dog may be at risk, schedule an evaluation today and get answers from one of the leading experts in the field.

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At The Animal Hospital of Smithson Valley, we go beyond standard testing.Dr. Madigan is actively developing advanced serologic testing methods to improve detection accuracy.Your dog’s evaluation may include:<ul><li>Comprehensive physical exam</li><li>Cardiac screening</li><li>Specialized blood testing for T. cruzi</li><li>Advanced diagnostics when needed</li></ul>Early detection allows for better management and improved outcomes.

Dr. Roy Madigan, D.V.M., is not just a veterinarian. He is one of the leading experts in canine Chagas disease in the United States.<ul><li>Founder of Vida Pharmacal, focused on breakthrough parasitic disease treatments</li><li>Filed the first veterinary drug patent for anti-T. cruzi activity in dogs</li><li>Principal scientist for the U.S. military working dog Chagas treatment study</li><li>Veterinary lead for the Texas Chagas Task Force alongside the CDC and UT Health</li><li>Pioneer in developing diagnostic and treatment protocols for infected dogs</li></ul>Your pet is being treated by the same expert helping shape how Chagas disease is understood nationwide.

Chagas disease is caused by the parasite Trypanosoma cruzi, transmitted by “kissing bugs” commonly found in Texas.Once infected, dogs may appear normal while the parasite attacks the heart and other organs.Without intervention, Chagas can lead to:<ul><li>Sudden death</li><li>Heart disease</li><li>Arrhythmias</li></ul>

Chagas disease progresses in stages. The earlier it is identified:<ul><li>The more treatment options are available</li><li>The better heart damage can be managed</li><li>The higher the chance of improving quality of life</li></ul>Waiting can mean irreversible cardiac damage.

Chagas disease is often silent early on, but warning signs may include:<ul><li>Lethargy or decreased activity</li><li>Fainting or collapse</li><li>Irregular heartbeat</li><li>Difficulty breathing</li><li>Unexplained weight loss</li></ul>If your dog spends time outdoors, lives in Central Texas, or has been exposed to insects, they may be at risk even without symptoms.

Why The Animal Hospital of Smithson Valley Is Different

chagas-disease-ahsv

Chagas disease is often silent early on, but warning signs may include:
 
 • Lethargy or decreased activity
 • Fainting or collapse
 • Irregular heartbeat
 • Difficulty breathing
 • Unexplained weight loss
 
If your dog spends time outdoors, lives in Central Texas, or has been exposed to insects, they may be at risk even without symptoms.<div> </div><div> </div>

chagas-disease-ctv

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At Central Texas Vet, we go beyond standard testing.Dr. Madigan is actively developing advanced serologic testing methods to improve detection accuracy.Your dog’s evaluation may include:<ul><li>Comprehensive physical exam</li><li>Cardiac screening</li><li>Specialized blood testing for T. cruzi</li><li>Advanced diagnostics when needed</li></ul>Early detection allows for better management and improved outcomes.

Chagas disease is caused by the parasite Trypanosoma cruzi, transmitted by “kissing bugs” commonly found in Texas.Once infected, dogs may appear normal while the parasite attacks the heart and other organs.Without intervention, Chagas can lead to:<ul><li>Heart disease</li><li>Arrhythmias</li><li>Sudden death</li></ul>

copy-of-copy-of-chagas-disease

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<h1 dir="auto">Pet Obesity Awareness Month: Helping Your Pet Maintain a Healthy Weight</h1>October is Pet Obesity Awareness Month, an opportunity to take a closer look at an important part of your pet's overall health: their weight.A few extra pounds may not seem significant, especially on a pet who otherwise appears happy and healthy. However, excess weight can put additional strain on the body and contribute to health concerns that affect mobility, comfort, and quality of life.The good news is that small, consistent changes can make a meaningful difference. Understanding your pet's ideal weight and working with your veterinary team can help support their health throughout every stage of life.<h2 dir="auto">Why a Healthy Weight Matters for Pets</h2>Pet obesity occurs when a pet consistently takes in more calories than their body uses, resulting in excess body fat. Several factors can contribute, including portion sizes, treats, activity level, age, and genetics.Maintaining a healthy weight is about much more than appearance. Excess weight may increase a pet's risk of health concerns such as:<ul><li>Diabetes</li><li>Arthritis and joint problems</li><li>Heart disease</li><li>Certain types of cancer</li></ul>Carrying extra weight can also make everyday activities more difficult. A pet may become less interested in playing, tire more quickly on walks, or have difficulty jumping, climbing stairs, or getting comfortable.<h2 dir="auto">How Can You Tell if Your Pet Is Overweight?</h2>It isn't always easy to recognize gradual weight gain, especially when you see your pet every day. That's one reason routine veterinary visits are so important.Some changes you may notice at home include:<ul><li>Difficulty feeling your pet's ribs beneath a layer of fat</li><li>Less definition around their waist when viewed from above</li><li>Decreased interest in exercise or play</li><li>Difficulty getting up, jumping, or using stairs</li><li>Becoming tired more quickly during normal activities</li></ul>These signs don't necessarily mean your pet is overweight. Changes in activity or mobility can also be associated with other health conditions, so it's important to discuss them with your veterinarian rather than making changes to your pet's diet on your own.<h2 dir="auto">Portion Sizes Can Make a Difference</h2>Feeding appropriate portions is an important part of maintaining a healthy weight. It's easy to unintentionally provide more food than your pet needs, particularly when portions are estimated rather than measured.Your pet's nutritional needs depend on several factors, including their age, size, activity level, and overall health. Feeding guidelines on pet food packaging can provide a starting point, but they may not reflect your individual pet's needs.Your veterinary team can help determine an appropriate daily amount and recommend adjustments when necessary.<h2 dir="auto">Don't Forget About Treats</h2>Treats may be small, but the calories can add up quickly throughout the day.Consider how treats, table scraps, dental chews, and other extras fit into your pet's overall diet. If multiple family members give treats, make sure everyone knows how much your pet receives throughout the day.Your veterinarian can also help you identify appropriate treat options and portion sizes for your pet.<h2 dir="auto">Make Activity Part of Their Routine</h2>Regular physical activity can help pets maintain a healthy weight while also providing enrichment and opportunities to spend time with their families.For dogs, activity might include walks, games of fetch, or interactive play. Cats may enjoy wand toys, climbing structures, puzzle feeders, or short play sessions throughout the day.The right amount and type of activity vary from pet to pet. Age, breed, mobility, and existing health conditions should all be considered. Before significantly changing your pet's exercise routine, talk with your veterinarian about what's appropriate for them.<h2 dir="auto">Weight Management Isn't One-Size-Fits-All</h2>If your pet needs to lose weight, simply feeding less isn't always the best approach.A veterinarian can evaluate your pet's current weight and overall health and help determine whether there may be other factors contributing to weight gain. From there, your veterinary team can recommend a plan based on your pet's individual needs.A weight management plan may include changes to portion sizes, food choices, treats, activity, or feeding routines. Regular weight checks can also help your veterinary team monitor progress and make adjustments along the way.Healthy weight loss should be gradual and guided by your veterinarian.<h2 dir="auto">Routine Wellness Visits Help Keep Weight on Track</h2>Because weight changes often happen slowly, routine wellness visits provide an important opportunity to monitor trends over time.During your pet's visit, your veterinary team can assess their weight and body condition, discuss nutrition and activity, and identify changes that may need attention. These conversations are valuable even if your pet isn't currently overweight.Your pet's needs can change as they age, so a diet or feeding routine that worked well several years ago may need to be adjusted over time.<h2 dir="auto">Support a Healthier Life at Every Stage</h2>Pet Obesity Awareness Month is a helpful reminder to look beyond the number on the scale and think about how your pet's weight may be affecting their everyday health and comfort.Maintaining a healthy weight can support mobility, activity, and overall well-being. Whether you're concerned about a recent change or simply want to make sure your pet is on the right track, your veterinary team can help.Have questions about your pet's weight, nutrition, or activity level? Schedule a wellness exam with our veterinary team to discuss a plan that's right for your pet.

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Experience stress-free pet care with our mobile veterinary services that bring expert, compassionate care to your home. Our at-home veterinarians provide wellness exams, vaccinations, parasite prevention, and end-of-life care in a calm, familiar setting. Ideal for senior or anxious pets and busy families, we deliver trusted, personalized veterinary care right to your doorstep, where your pet feels safest.

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Get expert pet care from home with virtual vet telemedicine at (). Our licensed vets provide secure, convenient video visits for minor issues, follow-ups, and wellness advice, perfect for anxious pets or busy owners. Book your virtual vet appointment today.

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Pet acupuncture at () provides gentle, drug-free relief for pain, arthritis, and mobility issues. This holistic therapy boosts circulation, reduces inflammation, and supports healing for happier, healthier pets.

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Laser therapy is a non-invasive treatment that uses light to stimulate healing and reduce pain in animals.

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Ensure your pet travels safely with veterinary health certificates and travel documentation support. Our veterinarians provide exams, guidance, and required paperwork to help prepare your pet for travel based on your destination and specific requirements.

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Saying goodbye is the hardest part of loving a pet. When that time comes, you deserve clarity, comfort, and the space to make decisions with peace of mind.

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When your pet needs medication, trust and convenience matter. At (), we prescribe and dispense medications directly from the team whos seen your pet, knows their health history, and understands their specific needs.
No guessing, no delays, and no unnecessary confusion.


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Skin issues are one of the most common reasons pets end up at the vet, and they're also some of the most frustrating. Allergies, infections, or even food sensitivities can all cause your pet discomfort.

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When pets act out, there's almost always a reason. Anxiety, fear, medical conditions, or past trauma can show up as barking, biting, hiding, or destruction. Our job is to uncover the cause and help your pet feel safe again.

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Nutrition is the foundation of good health, and a powerful tool in managing weight, energy, chronic conditions, and even behavior.

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Your pet can't tell you when something's wrong. That's why regular wellness exams are so important. These visits give us the chance to catch health issues early, before they become painful or costly.  

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Bad breath isn't just annoying - it's often a sign of deeper health issues. Dental disease in pets can lead to oral pain, local or systemic infection, tooth loss, and even heart, liver, or kidney complications. 

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Fleas, ticks, and intestinal worms are not just a nuisance, they are dangerous. These tiny pests can cause serious health issues like Lyme disease, heartworm disease, and tapeworms. 

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Vaccines are one of the most important tools we have to protect pets from serious, often deadly diseases. Whether you have a rambunctious or a relaxed pet, vaccinations help your pet build strong immunity and avoid preventable illness.

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When your pet isn't acting like themselves, diagnostic testing helps us find the reason. From bloodwork, urine testing, and fecal exams to x-rays, these tests give us a window into what's happening inside, so we can take action before things get worse.

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When pets get sick or injured, you want answers fast. Advanced imaging gives us a deeper look, without invasive procedures.


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Permanent ID for Peace of Mind. A collar can come off. A tag can get lost. But a microchip is a permanent, tamper-proof way to make sure your pet always has a way home. At (), we offer safe and simple microchip implantation, so your pet stays connected to you, no matter what.

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Discover hidden dental issues before they cause pain with pet dental radiology at (). Our veterinary dental X-rays reveal infections, bone loss, and tooth damage beneath the gum line, ensuring safer, more effective treatment. Non-invasive and included in every comprehensive dental cleaning, dental radiographs for pets help protect your pet's health, comfort, and smile for years to come.


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Spaying or neutering your pet is one of the most important decisions you can make for their long-term health. It helps prevent certain cancers and infections, curbs unwanted behaviors, and reduces the number of orphaned pets in shelters.

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