The Mosaic account of the Creation is the true one.  Speech is God's gift to man.  Harmful creatures show man's superiority, and only harmful after the Fall.

And though Bodies are from the Darkness, as they say, they have Speech and Mind (and) Beauty, and there is no . . . and as regards the lightly-moving Luminaries which are from an Element endowed with Speech which shuts up their mouths like a scorpion ... let them be refuted concerning the Luminaries (and shown) that because they are lamps created for our service, the Sun and Moon are rightly deprived (?) of Speech. For by Speech [our superiority in the rank of creatures is clearly demonstrated and the Luminaries are] for our service, God . . . [so the Luminaries] are found against them, so that though they do not wish it they establish the word which Moses wrote. For when God created everything for the service of man, and that he might show that creatures were created to serve him, He did not give them Speech and Mind as (He did) to him that their inferiority [lxxxvi] might prove about them that they were certainly for service, as, also, the superiority of man proves concerning him that he [P. 114, l.4.] is certainly to be served. And not only harmful creatures did He create for the service of Adam ; for it might be thought that if they were harmful they might be able to cause him harm, on this account God created those creatures which are fierce, and those which are terrible, and those which are cruel, and those which are harmful, in order that the sovereignty of Adam might be seen, set over all like that of God. But he possessed this power over them before he sinned, but they received this power against him after he had sinned. Therefore God said, let us make man in our Image, that is in the Image of His authority, so that just as the authority of God rules over all so also the yoke of Adam's lordship had been set over everything.