VCA Veterinary Hospital of Leon Springs

Parasite Control

Did you know that some pathogenic parasites your pet could be exposed to can be transmitted to humans?

Intestinal worms and other pathogenic parasites can be found in the environment all around us every day. Even pets who live indoors can become exposed to harmful parasites by soil tracked indoors on shoes, exposure to fleas or the ingestion of an infected host (such as a beetle or cricket).

Because it is possible for an animal to be infected with parasites, and not show any symptoms, routine testing is very important for early detection. Using testing and preventative medication can help keep your pet healthy and parasite free! In order for your pet to be fully protected, consistant application of preventative medication is necessary.

Some of the most common intestinal parasites include

  • Heartworm – Heartworms are one of the most common parasites among pets. These potentially deadly parasites are transmitted through mosquitos, who bite infected hosts and spread the parasite though biting a number of other animals. If left untreated, heartworms can be deadly to both cats and dogs. Symptoms can include coughing, gagging and difficulty breathing.
  • Roundworms – Roundworms can either be contracted when your pet ingests roundworm eggs directly, or through consuming an infected host animal. Pregnant mothers who are infected can also pass the parasites onto their young through their bloodstream or nursing. Animals suffering from roundworms may experience constipation, vomiting or diarrhea.
  • Hookworms – Hookworms are a type of intestinal parasite which attach themselves to the small intestines. Your pet could become infected if they consume the larvae or have skin contact with the penetrating larvae.
  • Tapeworms –Tapeworms are most commonly transmitted by fleas. When a cat or dog nips at irritates sites where the fleas are feeding, they can sometimes ingest the fleas themselves. When the fleas are harboring tapeworms within their bodies, the worms become imbedded within the animal who has consumed them.
  • Whipworms – Whipworms are one of the parasitic worms an animal may be infected with, without showing symptoms. Whipworms can be contracted either through direct ingestion of the larvae, or through exposure to contaminated soil. Animals infected with whipworm may show signs of diarrhea, weight loss and anemia.

Preventative medication is very important for keeping your pet safe and healthy. We offer several different products at our VCA clinic which will help protect your pet, and your family.

ComboGuard – ComboGuard is an orally administered pill, given monthly, which kills and protects against fleas, as well as prevents heartworms, hookworms, roundworms and whipworms. ComboGuard is available only for dogs.

Quadriguard – Quadriguard is an orally administered pill, given monthly, which protects against heartworms. Quadriguard is only available for dogs.

Paradyne – Paradyne is a topical medication that kills and prevents fleas, as well as protects against heartworms, hookworms, roundworms and ear mites. Paradyne must be applied monthly, and is available for all cats, and puppies under 5 pounds.

Together, you and your veterinarian can decide which medication will best meet your pet’s needs.


Specialty Care

Sometimes sick or injured pets need the care of a veterinary medical specialist. When that happens, VCA specialty hospitals work closely with the general practitioner veterinarians who refer cases to us in order to provide seamless veterinary care to your pet. When your pet is facing any kind of serious illness or injury, our specialty referral hospitals will provide the compassionate and expert care your beloved pet needs.

Our goal is to make sure that when you and your pet are in need that you have access to board certified specialists who are up to date on the very latest developments in their field. In our state of the art hospitals, our specialists also have access to the most sophisticated diagnostic and treatment tools and techniques from ultrasonography and endoscopy to CAT scans and even MRI.

As part of the VCA family, we have over 83 specialty hospitals across the US and Canada which provide referral specialty care, so there may be one near you. Our specialized services include: behavior, cardiology, critical care, dentistry, dermatology, integrative medicine, internal medicine, neurology, oncology, ophthalmology, radiology, rehabilitation, reproduction, and surgery.

Find a VCA Specialty Care Animal Hospital near you:


See all VCA Animal Hospitals >


Emergency Care

In case of an emergency during normal business hours (M-F 7:30am - 7:00pm) please call us at 210-698-1043.


Should you have an after-hours emergency, please contact either of these pet emergency hospitals:


Mission Pet Emergency -

Located at: 8202 N Loop 1604 West, San Antonio Texas, 78249

Phone: 210-691-0900


Emergency Pet Center -

Located at: 503 E. Sonterra Blvd., San Antonio Texas, 78258

Phone: 210-404-2873


If you feel that your pet has potentially ingested a toxin, please contact either one of the above listed pet emergency centers, or the pet poison helpline. 

Online at:


For a list of current pet food recall alerts, please visit the American Veterinary Medical Association's website at