He's a beautiful cat. Dog food and cat food is formulated for cats and dogs and part of that formulation is added salt which is something chickens do not need. Do I think that a can thrown at 20-30 chickens once a week is going to hurt?- no. But I would spread it out so everybody gets some and not just the lead hen-which happens- lead hens eat to their fill first then the subordinates after. And I would not give until they've eaten some of their own food for the day. So serve maybe later in the day. And only once a week. That's what I would do. And that's what I've read other BYC ers have done or recommended.