Yes it is not easy currently but possible. Especially for humans: I can live off my garden mostly and I do eat eggs of my own chickens (most of which too old to lay). My dogs eat the leftovers of a bar in the village which is cheating but as humans we do not kill (Also not indirectly). I am not opposed to eating meat though but I am and against discrimenation as well; I cannot eat bacon if I cannot eat dog and my chickens are nice; I cannot spare them and eat others. So I abstain.

Animals eating pray is different; we humans however can choose and we do not need to. Even if I think if you (or someone else but not some bio factory) get up in the morning and chase your own boar, hang it and slaughter it then it is ok but buying some packet in the shop should at least give you pause.

Let me know how the dogfood works out that would be good.