Dr. Nicoletta Nica

Reviewed by Dr. Nicoletta Nica
Updated on 26/11/2025
Reading time 4 min.

Overview

Severity: Low

Life stage: All

Giardia is a microscopic parasite that can cause diarrhoea, bloating and appetite loss in cats. While any cat may be affected, kittens and those with weaker immune systems are more vulnerable.

Dubai’s climate and living conditions make giardia especially concerning. The parasite survives longer in warm, humid environments, and exposure risks increase in shared outdoor spaces or apartment living. Fortunately, with early veterinary care, most cats recover fully, and strict hygiene helps prevent reinfection.

What is giardia in cats?

Giardia is a tiny, single-celled parasite that differs significantly from other common cat health threats like worms, bacteria or viruses.

  • How it works: Giardia attaches to your cat’s intestinal wall, where it feeds and multiplies, causing the digestive condition known as giardiasis
  • Who it affects: It can infect cats, dogs, humans and other animals, making it a ‘zoonotic’ condition with potential for cross-species transmission
  • Transmission risk: Cat strains usually differ from human ones, but crossover can occur
  • Why it matters in Dubai: Indoor cats may still be exposed through contaminated litter or owners’ shoes

How do cats get giardiasis?

  • Direct contact with infected faeces (poo) from other animals: particularly problematic in shared outdoor areas and communal spaces
  • Environmental contamination: where cats access balconies, gardens or shared courtyards in Dubai’s apartment complexes and villa compounds
  • Self-grooming: cats lick themselves clean after contact with contaminated surfaces. Given cats’ meticulous grooming habits, even minimal contamination can lead to infection
  • Contaminated water sources: cats drinking from puddles, irrigation channels or shared water bowls in communal areas

Symptoms of giardia in cats

Signs usually appear 1–2 weeks after infection and may vary depending on your cat’s age and immune defences:

  • Watery, foul-smelling diarrhoea (sometimes with mucus)
  • Excessive gas (flatulence) and bloating
  • Reduced appetite or food refusal
  • Occasional vomiting
  • Dehydration: increased risk in Dubai’s heat

Which cats are most at risk?

Whilst cats of any age or breed can contract giardia, certain factors increase risk and severity of symptoms:

  • Young cats under 3 years old: Immature immune system defences
  • Cats with weakened immune systems: Increased risk due to other illnesses, stress or certain medications
  • Indoor cats with outdoor access: Those transitioning between environments may have less developed immunity to parasites

Some cats can carry giardia without showing obvious symptoms but still spread the parasite to other pets, making regular health monitoring particularly important in Dubai’s close-knit pet communities.

Diagnosis of giardia in cats

Your vet will need to examine fresh stool (poo) samples to identify the parasite or its cysts. Giardia is shed into stool intermittently, so a single sample may miss the infection.

How to collect a stool sample

  • Use vet-provided containers (or clean plastic tubs/bags), take 2 scoops of fresh stool, and repeat for 3–5 days as advised.
  • Wear gloves or wash hands well after handling.
  • Label each sample, keep sealed in the fridge, and separate from food.

Veterinary testing is essential:

  • Stool (faecal) testing: multiple samples over 3–5 days increase accuracy.
  • Antigen ‘snap tests’: a reliable test to detect giardia proteins, often providing same-day results.

Treatment for giardia in cats

Treating giardia requires a comprehensive approach that combines medication, dietary support and strict environmental hygiene measures:

Medication

  • Fenbendazole: A safe, commonly prescribed deworming medication
  • Metronidazole: An antibiotic that also fights intestinal parasites
  • Often used together for optimal results

Diet

  • Specialised prescription digestive diets: Ease digestion, help firm up stools and provide balanced nutrition for recovery
  • Probiotics: Restore healthy gut bacteria and boost natural defences and support longer term recovery from diarrhoea

Duration

  • Most treatments last 2-3 weeks: strict adherence to directions and consistency are essential

Hydration

  • Ensure fresh filtered or bottled water is always available; this is especially important in Dubai’s hot climate

Follow-up

  • Your vet will usually advise testing a stool sample for giardia at the end of treatment and 2-4 weeks afterwards to confirm the infection is cleared

Home care and hygiene for cats with giardia

Giardia cysts survive well in Dubai’s warm, humid environments, so strict home hygiene is essential to prevent reinfection.

Indoor cleaning

  • Use regular household disinfectants daily: consistency is paramount
  • Focus on your cat’s main contact areas: litter trays, feeding areas and your cat’s favourite resting spots
  • Dispose of faeces immediately: minimises risks of environmental contamination

Outdoor areas

  • Dubai’s strong sunlight will help kill cysts on grass and soil, but the process takes time.
  • For balconies, patios, or concrete surfaces: scrub first, then disinfect.

Bathing:

  • Although baths can be stressful for most cats, they are useful for keeping their coats clean and free of faecal material, particularly in long-haired cats
  • Clean under the tail regularly: Use pet disinfectant wipes to remove contamination

Prevention and control of giardia

Prevention requires ongoing vigilance, particularly challenging in Dubai’s environment where giardia can persist for months:

  • Give medication as prescribed and complete the course: Incomplete treatment can lead to persistent infection and resistance
  • Daily cleaning routine: Clean floors, litter boxes, food bowls, toys, and bedding consistently
  • Continue intensive cleaning: Maintain strict hygiene for several days after completing medication
  • Limit outdoor access: Restrict access to balconies, shared gardens, and outdoor areas during treatment
  • Multiple cat households: Treat all cats in the home to prevent reinfection cycles. Talk to a vet for advice

Can cats pass giardia to humans or other pets?

The risk of cat-to-human transmission is relatively low, as feline giardia strains typically differ from those affecting humans. However, some crossover can occur, making good hygiene essential.

Key precautions:

  • Wash your hands thoroughly after handling cats or cleaning litter boxes
  • Take extra care around young children, the elderly or people with weakened immune systems.
  • In Dubai’s apartment living, germs can spread more easily in limited spaces
  • Maintain strict hygiene in smaller apartment spaces

When to see a vet urgently

Seek immediate veterinary attention if your cat shows:

  • Persistent vomiting and diarrhoea with lethargy
  • Abdominal bloating or distension
  • Blood in stool for more than 24 hours
  • Signs of pain: hunched posture, reluctance to move, vocalisation when touched
  • Signs of dehydration: dry gums, poor skin elasticity

Consult your vet if:

  • Your cat is eating less but otherwise appears well
  • You have questions about feeding during treatment
  • You notice single episodes of bloody stool
  • You need guidance on hygiene management protocols

Worried your cat might have giardia? Book a checkup today at Modern Vet Hospital in Dubai. Our experienced team offers accurate diagnostic testing, effective treatment plans, and ongoing support to ensure your pet recovers fully. Modern Vet Hospital is your trusted partner for compassionate, thorough veterinary care in Dubai

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Dr. Nicoletta Nica

Reviewed by
Dr. Nicoletta Nica
DVM MRCVS

Dr. Nicoletta was born in Romania and studied veterinary medicine in Timisoara.After graduation Dr. Nicoletta remained in Timisoara, and worked for a small animal clinic.

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FREQUENTLY ASKED QUESTION
FREQUENTLY ASKED QUESTION
Most cats recover in 2–3 weeks, though some need a second course.
Yes. Dubai’s warmth and humidity allow giardia to persist longer.
Yes, through contaminated litter, shoes, or limited outdoor access like balconies.
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