Keeping them well
Health & Welfare
Most problems are husbandry problems. Prevention beats treatment.
Get their environment right and these are hardy animals. The trade is where the risks creep in. So this covers the big welfare decision when you buy, how I quarantine a new arrival, the ailments to watch for, and when it's time to stop guessing and call a vet.
Wild-caught vs captive-bred
The single biggest welfare factor with this species is where the animal came from. Most emerald tree skinks in the trade are still wild-caught.
Wild-caught (WC)
- Arrive stressed, dehydrated and underweight
- Very commonly carry internal parasites
- Often skittish and slow to settle
- Higher early mortality
- Removes animals from wild populations
Captive-bred (CB)
- Healthier, better hydrated, feeding reliably
- Far lower parasite load
- Calmer, acclimated to captivity
- Known age and often known parentage
- No impact on wild populations
Parasitology backs this up for the species specifically. Two coccidian parasites, Eimeria nuiailan and Eimeria auffenbergi, were described from emerald tree skinks collected in Papua New Guinea and the Philippines, and before that work there were no coccidian records from this skink at all (McAllister et al. 2013). Treat any imported animal as carrying something until a vet says otherwise.
Recommendation
Buy captive-bred whenever you can. If you take on a wild-caught animal,
budget for a vet fecal test and deworming, and give it a long, quiet
quarantine and settling-in period.
Quarantine new arrivals
- House new animals separately for at least 30–60 days (longer for WC) before any contact with existing reptiles.
- Use a simple, easy-to-clean setup during quarantine so you can monitor droppings and appetite.
- Get a fecal exam from a reptile vet; treat parasites before the animal joins its permanent home.
- Handle quarantined animals last and wash hands/tools between enclosures.
Common health issues
See a vet now if you see any of these
Open-mouth breathing or wheezing, a gaping wound, anything protruding
from the vent, a female straining or swollen and not laying, sudden
collapse or inability to grip, seizures or tremors, refusal to eat
combined with rapid weight loss, or blistered and blackened skin.
These are not wait-and-see situations.
| Problem | What you see | Likely cause | First response |
|---|---|---|---|
| Metabolic bone disease | Soft or bent limbs and jaw, tremors, weak grip, reluctance to climb | Too little UVB, calcium or D3, or an imbalance between them | Vet. Correct UVB and supplements immediately |
| Dehydration | Sunken eyes, wrinkled or tented skin, sticky mouth, lethargy | Low humidity, too little misting or no drinking source | Raise humidity, mist more, offer droplets. Vet if not improving |
| Retained shed | Old skin stuck on toes, tail tip and around the eyes | Humidity too low during the shed cycle | Raise humidity, gentle warm soak. Never pull skin off |
| Respiratory infection | Open-mouth breathing, clicking or wheezing, mucus, puffing up | Too cold, too wet, or stagnant air with poor ventilation | Vet promptly. Review temperatures and ventilation |
| Internal parasites | Weight loss despite eating, runny or foul droppings, lethargy | Very common in wild-caught imports | Vet with a fresh faecal sample. Do not guess at treatments |
| Mites | Tiny moving dots, especially around eyes and skin folds, restless rubbing | Introduced by new animals, decor or substrate | Vet-guided treatment plus a full enclosure clean-down |
| Mouth rot | Swelling, redness or cheesy matter around the mouth, reluctance to feed | Injury combined with stress or poor conditions | Vet. Usually needs proper cleaning and medication |
| Thermal burns | Blistered or discoloured skin on the back and upper body | Contact with an unguarded heat source or a failed thermostat | Vet. Guard the heat source and check the thermostat |
| Egg binding | Gravid female straining, swollen, restless then flat and weak | No suitable lay site, poor condition, calcium shortage | Urgent vet. Offer a proper humid lay site in the meantime |
| Prolapse | Tissue protruding from the vent | Straining, impaction, parasites or poor condition | Emergency vet. Keep the tissue moist and clean, do not push it back |
| Cagemate injury | Bites, missing toes or tail, one animal hiding or losing weight | Territorial aggression, especially between mature males | Separate immediately. Treat wounds, then rethink the grouping |
| Weight loss | Visible hips and ribs, loose skin, prominent tail base | Parasites, temperatures too low to digest, competition or illness | Weigh weekly, check the setup, then vet with a faecal sample |
Fix the husbandry first, then the symptom
Most problems here are downstream of temperature, humidity, UVB or
diet. Treating a symptom while leaving the cause in place just buys a
short delay before it comes back.
Daily & weekly health checks
- Daily: is it alert, evenly coloured, basking and moving normally? Any laboured breathing?
- At feeding: is the appetite normal? Body firm and rounded, not sunken or bloated?
- Weekly: check droppings, watch weight trend, look for retained shed on toes/tail.
- A gram scale is the best early-warning tool, steady weight loss is often the first sign of trouble.
- Know the normal. Normal basking posture, normal appetite, normal colour. A dull, greyish animal that usually looks bright green is worth a closer look.
- Log conditions, not impressions. Temperature and humidity readings at animal height tell you what a thermostat dial cannot. Mine are logged automatically, which is the point of the Home Assistant setup.
Prevention checklist
- Correct UVB, replaced on schedule.
- Correct basking temperature verified with a probe, on a thermostat.
- Humidity cycling 60–80% with good airflow.
- Varied, gut-loaded, correctly supplemented diet.
- Guarded heat/UVB fixtures, no contact burns.
- Quarantine + fecal testing for every new animal.
- Clean water and spot-cleaning; full clean on a regular cycle.
This page is educational and is not veterinary advice. Reptile medicine moves fast and doses are species-specific, so anything beyond husbandry correction belongs with an experienced exotics vet.
Sources & references
- McAllister, C. T., Seville, R. S., Duszynski, D. W., Bush, S. E., Fisher, R. N. & Austin, C. C. (2013). Two new species of Eimeria (Apicomplexa: Eimeriidae) from emerald tree skinks, Lamprolepis smaragdina (Sauria: Scincidae) from Papua New Guinea and the Philippines. Systematic Parasitology 86(2): 165–171. Link