So while I from a sense of aesthetics do very much appreciate that Dorothy P. Lathrop won the very first Caldecott Medal (in 1938) for her visually stunning artwork, I also do not really think that Helen Dean Fish's Animals of the Bible: A Picture Book would be something all that appealing to and for the target audience, to and for younger children (the so-called picture book crowd) and that yes, Animals of the Bible: A Picture Book might well even be a trifle unsuitable.
But my issues with Animals of the Bible: A Picture Book are in fact not AT ALL with its Judeo-Christian themes and contents but mostly with the fact that the presented King James Bible passages Helen Dean Fish uses in Animals of the Bible: A Picture Book are in my humble opinion much too dense, much too complicated and intricate for younger children. For while I actually very much adore the King James Bible and consider it both a personal favourite and a literary masterpiece, Animals of the Bible: A Picture Book would indeed have been very much confusing and annoyingly tedious if I had had this picture book read to me as a child (and even if I had tried to read Animals of the Bible: A Picture Book on my own as a child). Because even if the King James Bible passages encountered in Animals of the Bible: a Picture Book are indeed beautifully expressive and full of much literary delight and merit, they really do NOT in my opinion work all that well in a picture book, they are just too difficult and too convoluted for use with, for reading to young children (and really, Animals of the Bible: A Picture Book is therefore and in my opinion more a Bible-themed picture book for adults, as it really does kind of fail as reading or listening fare for children, for anyone below the age of around at least twelve or even thirteen).
But even with Dorothy P. Lathrop's Caledcott Medal winning illustrations, I also tend to find some of her accompanying pictures (even though I have personally found them all visually spectacular) potentially problematic with regard to how suitable they might be for younger children, since especially Lathrop's depictions of serpents (Eve with the serpent and in particular the gaping and almost frothing snake jaws of Leviathan) could well be frightening (indeed, with Animals of the Bible: A Picture Book, those two serpent illustrations would have totally freaked me out as a child). And while therefore I can and do appreciate Animals of the Bible: A Picture Book in an of itself, as a picture book, I do consider it not all that suitable for children and even not really meant for children either.