Pacman frogs are hardy amphibians, but they are susceptible to a range of health problems — most of which are preventable with correct husbandry. This guide covers the most common Pacman frog diseases, how to identify them, and when to seek veterinary care.
Metabolic Bone Disease (MBD)
MBD is caused by calcium deficiency, vitamin D3 deficiency, or an imbalanced calcium-to-phosphorus ratio. Signs include soft or deformed jaw, difficulty catching prey, lethargy, and tremors in advanced cases. Prevent it by dusting all feeder insects with calcium at every feeding and using a D3 supplement 1-2 times per week. Mild cases can be reversed with corrected supplementation; severe cases require veterinary treatment. See our Best Calcium and Vitamin Supplements guide.
Bacterial Infections (Red Leg Syndrome)
Red leg is a bacterial infection most commonly caused by Aeromonas or Pseudomonas species. Signs include reddish or pinkish discoloration on the belly and legs, lethargy, loss of appetite, and skin ulcers in advanced cases. It is caused by poor substrate hygiene or waterlogged conditions. Red leg requires veterinary treatment with antibiotics — do not attempt to treat with over-the-counter products. Contact a reptile vet promptly if you notice skin reddening.
Parasites
Internal parasites are common in wild-caught amphibians and can occur in captive-bred individuals. Signs include weight loss despite normal appetite, abnormal waste, and lethargy. Diagnosis requires a fecal exam by a veterinarian. Treatment involves antiparasitic medications prescribed by a vet.
Obesity
Obesity is one of the most common problems in captive Pacman frogs. Overfeeding leads to fatty liver disease and shortened lifespan. A healthy adult should be round but not so large that the legs are obscured when viewed from above. Feed adults every 3-5 days and avoid waxworms as a staple. See our Pacman Frog Feeding Guide.
Chytrid Fungus (Chytridiomycosis)
Chytridiomycosis is caused by Batrachochytrium dendrobatidis (Bd). Signs include abnormal skin shedding, skin reddening or ulceration, lethargy, and loss of appetite. Captive-bred frogs are at lower risk than wild-caught individuals. Requires veterinary diagnosis and antifungal treatment. Quarantine new amphibians before introducing them to an established collection.
Estivation (Not a Disease)
Estivation is a natural response to dry conditions, not a disease. An estivating frog forms a cocoon of shed skin and becomes dormant. Gradually re-moisten the substrate and the frog should emerge within a few days. See our Pacman Frog Not Eating guide.
When to See a Vet
- Reddening of the skin
- Visible weight loss or skeletal deformities
- Swelling of the body or limbs
- Refusal to eat for more than 4 weeks with no husbandry cause
- Abnormal posture or loss of righting reflex
- Open wounds or skin ulcers