By: All About Frogs

If you're not sure and cannot find a caresheet on the type of frog you have, always start with crickets. Crickets are easy and basic. Most frogs and toads will eat all sorts of bugs and wiggly jiggly things that most people would cringe to see crawling on their bedroom wall at night... so if in doubt, start with crickets, and add anything else you find them interested in eating. The big fatties sometimes eat goldfish and guppies, and some will even eat mice!
As for teeny tiny frogs, you can try baby crickets or flightless flies or even live bloodworms placed in an upside down milk-cap (or some sort of shallow dish that has a bit of water for the worms.) For tadpoles, see the How to Raise Tadpoles page for more information. If you've got an aquatic frog (i.e. it stays underwater all the time), start with frozen bloodworms or brine shrimp.

How much should I feed my frogs?
This is probably one of the most common questions. Your best bet is to experiment and try out how much food seems to be good for your frog. Try dumping in 3 or so crickets per feeding session per frog, and see whether the frogs seem to still be hungry or starts to look underfed. Remember, frogs really do seem to have distinct behaviors, even within a species! Some will gorge themselves on any available tasty morsels regardless of need, while others will only eat once in a while when hungry. Excessive feeding is not healthy for many frogs, though some simply choose to ignore excessive food when not hungry. Determining how much to feed the frog is often a matter of understanding your frog's personality! Other types of food can be tried (ex. mealworms, waxworms, grasshoppers,etc.) But crickets seem to be the "food of choice."