I think this has been said before. But if we keep saying it maybe someone, somewhere may take notice. lol I know.
The information I'm finding tells me I can get pet food from the Magic Academy. They only seem to occur in the crafting part, so infrequently, they might as well not be there...
Not wanting to put money into this, as things I actually want to happen do not get better. For example there has been insufficient pet food production and excessive payment wanted for thier monitary purchase but this seems to be being ignored and I know of a number of players who have given up...