Suit up. Keep your dog current on vaccines and flea and tick protection. Light- or short-coated dogs can get sunburned, so ask your vet for recommendations on canine sunscreen because some human sunscreens are toxic if your pet licks them off. To make him more visible, outfit your dog with an orange bandanna or vest. Make sure he’s wearing ID tags and that his microchip info is up-to-date, and bring his proof of rabies certificate (some parks require it for entry).