Never a good idea to bring food into a dog park. This is just asking for serious trouble.
It's ok, but I really wouldn't recommend it. I've seen the best of dogs get in the worst fights at parks over even a crumb. Once an ice cube was fought over. Soo I'd just be cautious
You'll be fine to bring food. Just find a spot away from everyone. It's big enough.
Drinks like a bottle of water? Yes, it is allowed. I don't recommend to bring food.
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