One of the most important skills for any reptile keeper is the ability to assess their pet's health at a glance. Reptiles are masters of hiding illness — it's an evolutionary survival mechanism — so by the time obvious symptoms appear, the problem is often advanced. Learning to spot subtle signs of health (and illness) early gives you the best chance of successful treatment.
The Daily Health Check
Make these observations every time you interact with your reptile. The entire check takes 30 seconds once you know what to look for.
1. Activity and Posture
Healthy Signs: - Alert, responsive to your presence - Normal posture (not slumped, not pressing belly against the ground) - Normal movement patterns (smooth for snakes, coordinated for lizards) - Interest in food at feeding time - Basking normally during the day
Warning Signs: - Lethargy — staying in one spot all day - Head tilt or circling (neurological issue) - Open-mouth breathing (respiratory distress) - Stargazing (pointing nose upward persistently — often a sign of inclusion body disease in boas) - Weak or uncoordinated movements
2. Eyes
Healthy Signs: - Clear, bright, open - No discharge, swelling, or crust - Shedding properly — no retained eye caps (snakes and geckos)
Warning Signs: - Sunken eyes (dehydration) - Puffy or swollen eyes (infection, vitamin A deficiency) - Persistent closure (pain, illness, lighting too bright) - Cloudy or discolored cornea
3. Skin and Shedding
Healthy Signs: - Smooth, clean skin with species-appropriate coloration - Complete sheds in one piece (snakes) or in large patches (lizards) - Regular shedding frequency appropriate for age and species
Warning Signs: - Retained shed, especially on toes, tail tips, and eyes - Bubbles or blisters on the skin (scale rot or burns) - Redness or swelling (infection) - Lumps or bumps (abscesses, tumors, parasites) - Abrasions or wounds (enclosure hazards, fighting)
**Note on Shedding**: Young, fast-growing reptiles shed more frequently (every 2–4 weeks) than adults (every 4–8 weeks). Incomplete sheds are almost always a humidity problem, not a health problem.
4. Breathing
Healthy Signs: - Quiet, effortless breathing - No audible sounds - Chest/stomach movements are smooth and regular
Warning Signs: - Wheezing, clicking, or whistling sounds (respiratory infection) - Open-mouth breathing (unless cooling down after activity) - Excessive mucus or bubbles around the nose/mouth - Labored breathing with visible side-to-side head movement
5. Mouth and Nose
Healthy Signs: - Clean nostrils, no discharge - Gums are pink (in species where visible) - Mouth closes fully - Tongue flicks normally (in snakes and monitors)
Warning Signs: - Ropey, thick saliva - Cheesy white plaques in the mouth (mouth rot / stomatitis) - Swelling around the jaw (metabolic bone disease) - Bleeding or bruised-looking gums - Inability to close the mouth
6. Body Condition
Healthy Signs: - Firm, rounded body with no visible spine or hip bones - Muscular legs and tail (in lizards) - Triangular body shape for snakes (not round like a tube) - Healthy weight for species and age
Warning Signs: - Prominent spine or hip bones (underweight) - Bulging fat pads or rolls (overweight) - Bloated, hard belly (impaction, egg binding) - Sudden weight loss
Weekly Health Checks
Once a week, do a more thorough examination:
Handling Inspection Gently handle your reptile (if they tolerate it) and run your fingers along their body: - Feel for any lumps, bumps, or asymmetries - Check the tail base for swelling (impaction in males) - Examine toes and nails for retained shed or injury - Check the vent (cloaca) for swelling, redness, or discharge
Weigh Your Reptile Weekly weight tracking is the single best early warning system for health problems. A digital kitchen scale accurate to 1 gram is essential.
When to worry: - Weight loss of more than 5% of body weight in one week - Weight loss continuing for more than 2–3 weeks - Rapid weight gain (could indicate fluid retention or overfeeding)
Check Feces Fresh droppings tell you a lot about your reptile's health:
Healthy: Formed, species-appropriate color, white urate portion is chalky Unhealthy: - Runny or liquid (diarrhea, parasites) - Undigested food (temperature too low, parasites) - Blood in stool (internal parasites, injury) - No droppings for extended period (impaction, incorrect temperatures) - Foul smell beyond normal
When to See a Veterinarian
Find an exotic veterinarian BEFORE you need one. Regular checkups (annually for adults, more often for juveniles) are ideal, but see a vet immediately if you notice:
�� Emergency Signs �� - Bleeding that doesn't stop - Seizures or tremors - Unable to move - Egg-bound (straining without producing eggs) - Prolapse (tissue protruding from the vent) - Inability to breathe - Toxin exposure (cleaning products, pesticides) - Severe burns
⚠️ Schedule a Vet Visit (within 24–48 hours) ⚠️ - Not eating for 2+ weeks (adults) or 1+ week (juveniles) - Not defecating for extended period - Swollen joints or limbs - Lumps or abscesses - Respiratory symptoms (wheezing, bubbles) - Weight loss - Abnormal shedding that doesn't improve with humidity correction
Creating a Health Journal
A written record is invaluable for spotting trends and providing information to your veterinarian. Track:
| Date | Weight | Feeding | Shedding | Behavior Notes | Temp/Humidity |
|---|---|---|---|---|---|
| 6/1 | 245g | Ate 6 crickets | Complete shed | Very active | 95°F / 70% |
| 6/8 | 248g | Ate 5 crickets | — | Normal | 93°F / 68% |
Preventative Health Measures
Quarantine New Reptiles Quarantine every new reptile for 30–90 days in a separate room with separate equipment. Use a simple, easy-to-clean setup with paper towel substrate for easy monitoring. Watch for signs of illness before introducing them to your collection.
Proper Hygiene - Wash hands before and after handling each reptile - Disinfect enclosures and equipment with reptile-safe cleaners (F10, Chlorhexidine) - Never share equipment between enclosures without disinfecting - Quarantine any reptile that shows signs of illness
Annual Fecal Exam Even healthy-looking reptiles can carry internal parasites. An annual fecal float test at your exotic vet can detect issues before they become serious.
Routine Bloodwork for Seniors For reptiles entering their geriatric years (varies by species), annual bloodwork can catch kidney disease, liver problems, and other age-related conditions early.
The Bottom Line
The best medicine for reptiles is good husbandry. The vast majority of health problems in captive reptiles trace back to improper temperatures, humidity, nutrition, or sanitation. Maintain optimal conditions, feed a balanced diet, observe your reptile daily, and weigh them weekly — and you'll catch 95% of problems before they become serious.
Your reptile depends entirely on you. Being a proactive, observant keeper is the greatest gift you can give them.