We have two leopard frogs. Both were caught from the stock dam at my step-dad's farm in summer 2012 (boy-child went to visit grandpa on the farm & came home with frogs, garter snake, etc.). Both have been no trouble at all - they eat well (crickets from the pet store, loaded with cricket cubes, plus grasshoppers, flies, millers moths, etc., on occasion). They took a nice semi-sleep this winter, but have been quite active happy froggies for the past 2-3 months since waking. We started feeding from a new batch of crickets from Petco today, but no more than usual, and both frogs ate well.
Our larger frog (with round, rather than oblong, spots), has suddenly become ill this evening. He is always chubby, but seems a bit bloated in the tummy. His movements are spastic (more so than usual) and uncoordinated, and his rear toes are twitching uncontrollably. I have put him in a dish of fresh spring water, and he is settling down but still twitching. Color is fine, as are eyes. The other frog seems quite well & normal.
Any advice is greatly appreciated.