Check with the pet store and find out what they are feeding their crickets. Some get shipments of refrigerated wild crickets, and some get 'em from cricket breeders who feed them crumbled catfood or dog food. Wild crickets are sometimes inadequate in their calcium and/or vitamin D3 content, and captive vertebrates fed on them for a period of time can deveop rickets and/or nutritional secondary hyperparathyroidism.
No kidding, I've seen it in captive anoles fed on wildcrickets, and saw high incidence of nutritional bone disease in nestling cattle egrets in a region with a high mole cricket population(Brazos County, TX, yearly from 1993 thru 1996) Crickets were the most readily available food for the parent egrets to easily catch and feed their , so that was all that most of them ate from hatching until fledging. Young birds generally survived until nudged from the nest, when the fall (the quick stop, actually...) caused multiple fractures in their weakened skeletons. Broken wings, legs, and vertebrae were common.
The solution? Assure your toad's food supply is adequate by keeping a ready supply of crickets THAT HAVE BEEN FED for a few weeks on ON DRY DOGFOOD (Puppy chow or Adult maintenance diet. both contain adequate calcium, vitaminD-3, as well as a plethora of other vitamins and minerals).
Just some advice from your fiendly neighborhood retired veterinarian/wildlife/zoo pathologist who has had lots of experience with zoo and wild animals, as well as with "non-traditional pets".
Oh yeah; this is a case of the advice being definitely worth more than you paid for it!
Rescuing a one-eyed toad! Y'got a good heart, Laddie!
Best t'ye,
Dave
His name, aptly enough, is "Mower". He's also probably the coolest animal I've ever owned.
