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Fire Ants

Fire Ants and Pets in Florida: Safety Guide

The most likely hazard in an ordinary patch of grass. Scan before you let the dog run, and know the signs that turn stings into an emergency.

Updated September 7, 2026 3 min read By

Most visitors never meet most of this. Florida is a big state and its wildlife changes a lot from region to region - a cane toad is a South Florida backyard problem, a black bear is a central and north Florida one, and a crocodile only matters in the far south. These guides are here for the encounter you do have, not because one is likely.

Fire ants are one of Florida’s most common outdoor pet hazards.

They can sting:

  • Dogs
  • Cats
  • Livestock
  • Wildlife
  • People

A single sting is painful.

A pet that disturbs a mound can receive many stings quickly.

Florida Has Invasive Fire Ants

The red imported fire ant is one of Florida’s major pest species.

UF/IFAS describes it as:

  • Aggressive
  • Reddish-brown to black
  • About 1/8 to 1/4 inch long
  • Capable of painful stings

Fire Ants Attack When the Nest Is Disturbed

When a mound is disturbed, many workers can emerge rapidly and sting the intruder.

A dog may disturb a mound by:

  • Digging
  • Lying down
  • Stepping on it
  • Sniffing through grass

Florida Mounds Can Be Hard to See

UF/IFAS notes that Florida’s sandy soils can produce less obvious mounds than heavier clay soils.

Do not assume there are no fire ants because you cannot see a large mound.

Where Fire Ants Nest

They can nest:

  • Lawns
  • Around trees
  • Around stumps
  • Under pavement
  • Near buildings
  • In rotting logs
  • Utility areas

Check Dog Parks and Rental Yards

Before letting a dog run:

  • Scan the grass
  • Check around trees
  • Look at fence lines
  • Watch recently disturbed soil

This is especially useful at:

  • Vacation rentals
  • Campgrounds
  • Dog parks
  • Rest areas

If Fire Ants Swarm Your Dog

Move the dog away from the mound immediately.

Brush ants off carefully while protecting yourself.

Do not stand in the mound while trying to help the dog.

Where Dogs May Be Stung

Common exposed areas include:

  • Paws
  • Legs
  • Belly
  • Nose
  • Lips

A dog lying on a mound may receive stings across a large area.

Watch for Allergic Reaction

Multiple stings can be more serious than one sting.

Seek urgent veterinary care if your pet develops:

  • Facial swelling
  • Difficulty breathing
  • Collapse
  • Severe weakness
  • Widespread swelling
  • Repeated vomiting

Call Your Veterinarian for Treatment Advice

Do not automatically give human:

  • Antihistamines
  • Pain medicine
  • Steroid creams

without veterinary guidance.

Drug choice and dose depend on the animal.

Keep Pets Away From Treated Mounds

Fire-ant control products can also create pet hazards if misused.

Follow the pesticide label exactly.

Keep pets away for the required period.

There Is No Permanent One-Time Fix

UF/IFAS says no method permanently eliminates fire ants from an area.

Control may require:

  • Broadcast baits
  • Individual mound treatment
  • Ongoing monitoring

Flooding Creates a Special Hazard

UF/IFAS warns that flooded fire ants can form floating masses.

After:

  • Hurricanes
  • Tropical storms
  • Floods

keep pets away from floating debris and ant rafts.

This is especially important in Florida disaster cleanup.

Fire Ants After Hurricanes

Storm-damaged yards can contain:

  • Displaced colonies
  • Flooded ants
  • Hidden mounds
  • Debris

Keep pets supervised until the area has been checked.

Best Fire-Ant Safety Checklist

  • Scan yard
  • Avoid mounds
  • Supervise digging dogs
  • Move pet away immediately if ants swarm
  • Watch for breathing or facial swelling
  • Call veterinarian after significant reaction
  • Follow pesticide labels
  • Be extra careful after flooding

Fire ants are not dramatic Florida wildlife.

They are something more practical:

A common hazard that can be waiting in an ordinary patch of grass.

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