Monsoon Season Pet Safety: Heartworm, Valley Fever, Storm Anxiety

Monsoon Season Pet Safety: Heartworm, Valley Fever, Storm Anxiety

by | Sep 8, 2026 | Cats, Dogs, Pet Health & wellness

Arizona’s monsoon season can bring welcome rain, (slightly) cooler evenings, and dramatic thunderstorms and haboobs – but it can also create a few seasonal challenges for our pets such as Heartworm, Valley Fever, and Storm Anxiety. At Compassionate Animal Care, we want to help keep your dogs and cats healthy, comfortable and safe throughout monsoon season which officially “ends” September 30th.

Protect Dogs and Cats From Heartworm

More rain can mean increased mosquito activity, and mosquitoes can transmit heartworm disease. While heartworm is more common and often more severe in dogs, cats can get heartworm, too. In cats, even a small number of heartworms can cause serious respiratory problems and potentially be fatal.

Heartworm disease is preventable, so talk with us or your own veterinarian about an appropriate preventive for your dog or cat. Even indoor cats aren’t completely protected – mosquitoes can easily find their way inside your home.

Watch for Valley Fever

Valley Fever is another concern for Arizona pets, particularly dogs. It is caused by a fungus found in desert soil. Monsoon winds, dust and construction activity can stir fungal spores into the air, where pets can inhale them.

Dogs may develop symptoms such as coughing, lethargy, fever, decreased appetite or lameness. Cats can also contract Valley Fever, although it is less common. Cats may develop skin lesions, swollen lymph nodes, respiratory symptoms or other signs of illness.

Whenever possible, keep pets away from areas with blowing dust and avoid letting them dig in disturbed desert soil.

Help Pets Handle Storm Anxiety

Thunder, lightning, wind and heavy rain can be frightening for both dogs and cats. Storm anxiety means dogs may pace, pant or try to escape, while cats may hide, become restless or seek unusual hiding places.

Before a storm arrives, bring outdoor pets inside and make sure windows and doors are securely closed. Give your pet access to a quiet, comfortable area where they can feel safe. For cats, provide familiar hiding spots, such as a covered bed or open carrier, and keep food, water and a litter box nearby.

Microchips and updated identification are especially important during monsoon season, when frightened pets’ storm anxiety may lead them to try to escape.

Contact Compassionate Animal Care

A little preparation can go a long way toward keeping your four-legged family members healthy and comfortable during Arizona’s monsoon season, and while we are into the final month of the season, more storms are forecast.

At Compassionate Animal Care in Queen Creek, we’re here to help keep your pets healthy and protected. If you have concerns about Valley Fever, Heartworm disease, or severe storm anxiety in your pets, call our veterinary team. Contact our clinic today at 480.774.6995. 🐾

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