Yes, but make sure you pick up his/her poop. PLEASE. There are trash cans with dog poop bags available.
No
Yes make sure on a leash.
Yes Sweetfur the Cat, you can take your dog. I often take mine. There aren't very many dog waste bag dispensers though, so maybe bring some with you....and watch out for the geese!
Try Carlson dog park. It is on the north side of the Mt Rubidoux, off of Mission Inn Ave. On the left, just before going over the river.
Leash law also
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