I have found that there is considerable variation in the onset of calling with FB Toadlets, having bred these guys for a number of years. They are certainly capable of making sounds at 13 months but some are vocal at that age and some take longer. Do you think you might have two females? If so, this would explain why you haven't heard anything, as they tend only to vocalise when giving a 'release call' and if there are no males in with them, they are unlikely to need to. They can be hard to sex at around a year, but if you look at the hind feet, the males tend to have webbing which reaches right up to the toes, whilst the girls have webbing which doesn't extend that far up. I say tend to, because there's always the odd exception.





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