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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.

chagas-disease

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.

chagas-disease-ahsv

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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.<div> </div><div> </div><div> </div><div> </div><div> </div><div> </div><div> </div>

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>

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Dear Valued Client,Have you noticed a change in your senior pup’s behavior? Are you more aware of their age than you have been in the past? Is your senior pup showing any of the following signs?<ul><li>Disorientation</li><li>Changes in interactions</li><li>Alteration to the sleep/wake cycle</li><li>House soiling</li><li>Activity changes</li><li>Anxiety and learning/memory changes</li></ul>If so, your dog may be showing signs of Canine Cognitive Dysfunction (‘Doggie Dementia’). This is a common finding that can affect upwards of 68% of our senior pups. This process can be considered similar to Alzheimer’s in humans. As our dogs’ brains age, they are not as amenable to oxidative stress, which can ultimately lead to neuron death. With this ailment, our goal is to teach you the signs to look for and to give you tools to improve those changes that are negatively affecting you and your pup’s lives.The following are options we have available to us to help limit and potentially improve the signs of Canine Cognitive Dysfunction:Diet Options:Purina and Hill’s make diets that include ingredients like Omega-3 fatty acids, antioxidants, and others that can help with the aging brain.Supplement Options:There are many supplements available that include Omega-3 Fatty Acids, which contain EPA and DHA. These have been shown to improve cognition, learning, mood, and even aggression. Other supplements contain ingredients like ginkgo biloba, Vitamin E, and Vitamin B6. Some of these supplements even contain antioxidants that help with tissue repair/regeneration and cell membrane fluidity.Medications:A lot of the time, our pups with doggie dementia are not getting a good night’s sleep. We can discuss appropriate sleeping aid medications/supplements to aid in a more restful night. This will allow the brain to relax and potentially repair itself with good sleep cycles. In addition to sleeping medications, we can consider adding anti-anxiety medications, as many of our pups cannot process normal daily stresses like they used to.Cognitive Therapies:It has also been shown that enrichment activities at home have been beneficial. Taking the time to train new commands and engage in appropriate play/exercise can be hugely beneficial. We also want to discuss how to manage the environment. Such changes at home, like increasing lighting if your pup is declining visually, or adding anti-slip booties &amp; floor mats, can prevent slipping in the house, which can be very impactful.As you can see, there are numerous options available to us as pet owners and veterinary teams to help guide you and your decision-making for the most appropriate therapy. Our goal is to establish a routine that we can sustain, as many of these changes are slow onset, which means slow to show improvement.Use this tool from Purina to help us determine and score your pet’s Cognitive Dysfunction.Senior Canine Cognitive Assessment- DISHAA “Otto” (telemedicine) is a wonderful option for us to take the time to determine what is the most appropriate way to positively impact your pup with the changes/additions that can be most beneficial. It can be used for us to monitor progress and make alterations to the plans.Thank you. Please let us know how we can help!Dr. Mark Belyeu

Your dog may be showing signs of Canine Cognitive Dysfunction (Doggie Dementia). This is a common finding that can affect upwards of 68 percent of our senior pups. This process can be considered similar to Alzheimer's in humans. As our dogs' brains age, they are not as amenable to oxidative stress, which can ultimately lead to neuron death. 

Cognitive Dysfunction

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


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New Pet Exam & Preventive Care Savings | Welcome Home

Online Veterinary Pharmacy: Home Delivery & Savings

Halloween Safety for Pets: 5 Tips for Dogs and Cats

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