I am dusting with Repashy's ICB+ which has Vitamin A as both Retinol and Beta Carotene, so I don't think it's a Vitamin A deficiency. I have not tried other foods because the toad is still trying to eat what I'm giving it, it just can't get its tongue to work. Worms seem like they would be too large in relation to the size of the toad (1.5 inches long) even if it could eat those without using the tongue.