Why is my frog so active? Is this normal or a health concern?

Make sure the tank is large enough for him. Confirm proper environmental parameters as well (substrate, cage furniture, humidity, temperature, etc.). If even one parameter is "off" or if his water is dirty, it may cause stress and the desire to escape the enclosure.

Yes, she appears normal. She doesn't look that green but that may be the lighting. You should review your husbandry and make sure you are doing everything 100% correct. ( http://www.reptilesmagazine.com/Care-Sheets/Pac-Man-Frog/ )

Check the water quality and temperature. Frogs are very sensitive to poor water quality. Low temps can affect appetite and activity. You may need to perform a water change and increase filtration. Discoloration may be due to poor water quality or infection. If the water changes do not help, consider an exam with your veterinarian or a vet experienced in treating reptiles and amphibians.

Releasing it would not be recommended and in some locations, may be illegal. You can continue to feed nightcrawlers in addition to commercial frog pellets, brine shrimp, blood worms and small insect prey (nothing wild caught). Frogs are very sensitive to water quality and environmental parameters. Low temps can affect activity and appetite in amphibians and reptiles as can poor water quality. If you can provide the species of frog or an image, we can provide more comprehensive advice.

Thanks for your question - to find a veterinarian in your area, you can check the AAFV or ARAV websites. Additionally, UC Davis is a couple of hours from you, and they have a department at their veterinary school that will see both fish and frogs. For the rock size - you are correct - you want to have larger rocks so that your frog doesn’t accidentally ingest any of them. For your last question about the spasms - without further description I would be unable to determine if this was normal or not, but I would recommend ensuring that you have a complete and balanced diet for the species of frog that you have. Nutritional deficiencies can be very common in frogs, and can result in “spasms” in them. I hope that helps to answer your questions, and good luck!

Clean and sanitize the tank. Replace ALL the substrate with fresh organic topsoil or coco fiber. Do not use vermiculite or perlite. Avoid gravel, sand or wood chips. Ideal temperature ranges between 68F and 78F with the cooler end reserved for nighttime. Mist the cage several times weekly to maintain humidity. Provide a water bowl and clean it daily. Soak him in a tepid (75F) 50/50 solution of water and unflavored PediaLyte. This will provide warmth and hydration. A cold frog will not eat. Afterwards, offer live food. Something with a lot of movement like nightcrawlers or mealworms. If he still doesn't eat, have him examined by your veterinarian or a vet experienced in treating reptiles and amphibians.

Have the skinny one examined by a veterinarian experienced in treating reptiles/amphibians. Submit a stool sample to diagnose intestinal parasites. Although this is a docile species, monitor for bullying or aggression in case the larger one is not allowing its cagemate to eat.