Is It Safe to Be Around Pets During Chemotherapy?

For most people, being around pets during chemotherapy is safe, and the comfort of a familiar animal can be genuinely good for your wellbeing. The main thing to manage is infection: animals and their waste can carry germs that a healthy body usually handles easily but that matter more when chemotherapy lowers your infection-fighting white blood cells. A few simple precautions — washing your hands, avoiding animal waste, and keeping pets healthy — lower that risk. Because it depends on your treatment and your counts, your care team's guidance comes first.

Chemotherapy can lower the number of white blood cells your body uses to fight infection, and there are stretches during treatment when those cells are especially low. During those windows, germs that would normally be harmless can be more likely to cause illness. Animal waste in particular — litter boxes, cages, bird droppings, and fish tanks — can carry germs, which is why handling those tasks is where most of the caution focuses.

The type of pet matters too. A healthy, vaccinated dog or cat is a very different situation from a reptile, a very young animal, or a sick one, which can carry a higher chance of germs like salmonella. Your own situation — your treatment, your counts, and whether you have any broken skin or a central line — shapes how careful to be.

• Let someone else handle waste. Have another person clean litter boxes, cages, and tanks, and pick up after pets outdoors. If you must do it, wear gloves and wash your hands thoroughly afterward.
• Wash your hands. Clean your hands after petting, feeding, or playing with animals, especially before eating.
• Avoid bites, scratches, and licks on broken skin. Keep pets from licking wounds, cuts, or a central line site, and clean any scratch or bite promptly.
• Keep pets healthy. Stay up to date on veterinary care and vaccinations, and be cautious around sick, stray, or very young animals.
• Be careful with higher-risk pets. Reptiles, amphibians, and baby animals can carry more germs; ask your team before close contact with these.

Ask your care team whether there are any animal-related risks specific to your treatment, and whether someone else should handle litter boxes and animal waste while your counts may be low. If you have an unusual pet or a very young or sick animal, mention it so they can advise you. And make sure you know the signs of infection that should prompt a call — during treatment, a fever of 100.4–100.5°F (38°C) or higher can be a sign of a serious infection that needs prompt attention. Sources word this threshold slightly differently, so use the number your own team gave you.

This is general information. Your care team's specific instructions for your treatment always take priority.