runners and maybe a pekin - how tall should I make a predator proof enclosed run to attach to a night house for them? And while I'm at it... how hot is too hot for water? I put a small kiddie pool on the deck for the dogs. It is 92 out. The water was 109. I wouldn't put the dogs in there - I'm thinking that may be too hot for ducks too. Not that it would be on the deck for them, but still.