My leopard gecko has a black belly and isn't eating or pooping.
This could be his organs or an impaction/constipation. Without an exam, it is difficult to determine which it is.
Soak Macko in a warm 50/50 solution of water and unflavored PediaLyte for 20-30 minutes. Massage his abdomen, front to back, during the soak to stimulate defecation. Do this every other day. In between, confirm proper environmental parameters in the enclosure. Low temps will affect appetite and digestion in reptiles. Offer appropriately sized prey, no bigger than the space between the eyes. You can feed a mic of crickets, mealworms, dubia roaches and phoenix worms. Gut load all prey for 24 hours prior to offering to maximize nutritional value. This can be done by feeding them high protein baby cereal, tropical fish flaked and fresh greens. Dust with a multivitamin and a calcium/D3 supplement.
Pick up some Fluker's Repta Boost from the local Petco. Look in the reptiles section. You can use this to get some nutrition and calories into Macko.
If he doesn't begin putting on weight though, you will need to have him examined by your veterinarian. Submit a stool sample to diagnose intestinal parasites or bacterial overgrowth.
You can review leopard gecko care at this link:
http://www.anapsid.org/leopardgek.html
Updated on September 23rd, 2025