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Practice Name

Lake Howell Animal Clinic

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Primary Location
856 Lake Howell Road
Maitland, FL 32751
Phone: (407) 628-8000
Fax: (407) 628-8412

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A heartworm is a serious and potentially fatal, parasite that primarily infects the heart. Even though the dog is the natural host for this parasite, it can also affect cats, ferrets and other animals.

Heartworm is transmitted by a mosquito bite. In Florida, mosquitoes are everywhere and can transmit heartworms even to animals that never go outside. Like any other disease, prevention is better than treatment. There are several heartworm prevention products available; all of them with high efficacy. Your veterinarian can recommend the best product to use for your pet.

Important facts about heartworm disease:

  • Heartworms can only be transmitted from animal to animal by mosquito bites.

  • Dogs older than 6 months of age must be tested first, prior to starting on heartworm prevention.

  • Puppies and kittens should be started on heartworm prevention by 8 weeks of age.

  • Heartworms are about the length and diameter of thin spaghetti. Dogs can have over 100 worms in the right side of the heart and nearby vessels. One or two heartworms in the heart of a cat are enough to cause sudden death.

  • Heartworm prevention must be given every month, year round in order to be effective.

  • There is treatment available for dogs with heartworm disease. Complications of treatment in a dog with clinical signs of heartworm disease can be deadly.

  • There is no approved heartworm treatment for cats.

Life cycle of heartworms:

Mosquito bites an animal infected with heartworm  microfilariae (young heartworms) enter mosquito  microfilariae turns into infective larva in 2 weeks  mosquito bites an uninfected animal and transmits the infective larva  infective larva turns into adult heartworm within 6 months  adult heartworms live mainly in the right side of the heart and nearby lung vessels  male and female adult heartworms will mate and produce new microfilariae  new microfilariae will be picked up by a mosquito and inserted into another uninfected animal and the cycle will continue.

Adult heartworms have a life span of 5 to 9 years and will cause severe damage to the heart and lungs. The microfilariae can actually cause damage to other organs, such as the kidneys. When the animal shows signs of illness due to adult heartworm infection, such as respiratory distress, heart failure, kidney failure, etc., it is called heartworm disease.

Visit the American Heartworm Society website for detailed information on heartworm disease.

Nydia Melissa Perez, DVM

Veterinary Services

Welcome to Lake Howell Animal Clinic

"Your pet’s health and well-being is our number one concern."

Your Dog, Cat, and Exotics Veterinarian in Maitland, FL
Call us at (407) 628-8000

Veterinary Services:
  • Medical Care

  • Dental Care

  • Orthopedics

  • Surgery

  • Spay/Neuter

  • Critical Care

  • Vaccinations

  • Boarding

  • Diet & Nutrition

  • Referrals

  • Education

Services We strive to provide complete care for our patients. Learn more about all the services we provide. Make An Appointment We will do our best to accommodate your busy schedule. Schedule an appointment today! Online Forms Our patient forms are available online so they can be completed in the convenience of your own home or office.


We like the knowledge of both Dr.Diaz and Dr.Perez so much- we moved from another clinic we had been with for ten years. I highly recommend them both.

- Robin L. / Maitland, FL

I can say with much certainty that not many will do what you (Dr.Diaz) did for me. Not many are out there who have so much benevolence in their heart to help out others, particularly in the medical profession. My heart is filled with thankfulness towards you. I would also like to thank your staff which is equally as loving and caring. They showed tremedous sensitivity towards me and dealt with me in kindness.

- Vijai T. / Maitland, FL

Dr Perez has been the vet for my 3 dogs for over 5 years and I can't say enough good things about her care and the well being she has for my pups. Nancy is also very knowledgeable and wonderful. She takes the time needed to answer all my questions and gives me the best course of action when they're ill.

- Janis L. / Orlando, FL

Office Hours



Our clinic will have the following hours of operation for the week of the Thanksgiving holiday:

Monday, November 20................8am-5pm
  *Boarders drop off/pick up between 8am-4pm*
Tuesday, November 21................8am-5pm
  *Boarders drop off/pick up between 8am-4pm*
Wednesday, November 22..........7am-1pm
  *Boarders drop off/pick up no later than 11:00am**
Thursday, November 23..............CLOSED
Friday, November 24...................CLOSED

Saturday, November 25..............8am-1pm
  *Boarders drop off/pick up no later than 11:00am**


  • (407) 628-8000
  • 856 Lake Howell Road Maitland, FL 32751
  • Get Directions

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