The common noun for a toad ("жаба") is of female gender in Russian.
I wonder, is this an idiom, or a coincidence? When you encounter an anthropomorphic toad character in English fiction, without gender-specific hints in text, should you think that it is a he or a she?
(I know that real-world toads can switch genders from male to female, but I doubt that most of fiction / folklore take that in account.)
I can't comprehend the third, genderless possibility (I can accept that it may be true, but I can't wrap my mind around it):
If I were presented with a toad character without any hints as to gender, I'd have to suspend judgement.
— (From the comments)
...Can someone think out a query to the Google Ngrams to get a statistics on this? Mr. Toad vs. Mrs. Toad yield zero results both. (Perhaps that is not a good tool then, toads are not that popular.)
In common Google search, Mr. Toad is 489 000 results and Mrs. Toad is 7 590. But that probably does not mean anything, since The Wind in The Willows popularity will affect the search too much.
It is curious that toadess (12 900 results) beats Mrs. Toad...
...Maybe conduct a poll somewhere?
Maybe I've found a way to get statistics.
Search for toad "gender: female" yields 697 000 results, toad "gender: male" — 576 000. (My assumption is that this search should hit forum profiles for users with relevant nicks.)
Without the word "toad": "gender:male" is 18 800 000 results, "gender: female" — 12 000 000. This may indicate that toads are more female than male...
Not sure if it proves anything though...