DVirginiana and MeTree have given you good advice. Too add to it: The wound could have been caused by a number of things. He could have gotten in from burrowing in the bark or from something else in the enclosure. Is there anything in the enclosure with sharp edges? Like a fake plant or hide of some sort? He could have had cyst that popped. The crickets could also have cause the initial wound. Crickets can and will bite frogs, particularly if they are weak or sick. Once a wound occurs (whether it is from them or something else) they will continue to bite and tear at it. This is why crickets should not be left in the enclosure for long periods of time. Always remove any uneaten crickets each morning. Once the initial wound occurred, any of the above factors could have made it worse and caused it to get infected. The frog might also be digging at the wound himself - kind of like a kid picking at a scab. Frogs will scratch at a wound until it bleeds. Your frog will most likely need antibiotics to deal with the infection. If left untreated it could become septic. In the meantime, apply Origional Neosporin (Like DVirginiana said any ointment with painkillers in it will kill the frog) twice a day very gently with a Q-tip/cotton swap dampened with de-chlorinated water. He needs to be in a "hospital setup." Just paper towels dampened with de-chlorinated water, the water dish, and maybe a fake plant or hide to minimize stress. Keeping the wound clean is VITAL to fight off further infection.

Other notes: Distilled water should only be used for misting. De-chlorinated water must be used in any water dishes or for expanding the substrate. There are no nutrients in the distilled water so it will leach the nutrients out of the frog's skin. This can cause health problems long term. Also, the water dish should be changed every day or At Least every other day. If left sitting the water will become stagnant. This increases the risk of infection or illness.

Coco fiber is the best substrate for them. They can burrow in it easily and if they do swallow some it will pass through their digestive tract much easier than other substrates such as bark. Substrate should be changed about once a month.

Pacmans need calcium with D3 and mulitvitamins for maxium health.

Try using nightcrawlers as your main food source if you can. They are more nutritional and will not bite your frog. Always make sure any food items come from a reliable source.

The darkening is completely normal. Most greens don't stay completely green as adults. What type of Pacman was he sold to you as? He is very stunning. I hope he pulls through!



Hopefully this helps. Please keep us posted on how he is doing!