It’s not unusual to see a strange costumed character on the streets of San Francisco, but it’s not every day that they’re riding a horse. At about noon Wednesday, a trio of menacing-looking apes were seen trotting along the West Bluff Picnic Area at Crissy Field. The three simians did not speak to passersby as they headed toward the Fort Point National Historic Site at the base of the Golden Gate Bridge followed by a small camera crew. A few people on rental bikes were so surprised that they almost fell over, and several nearby dogs were alarmed by the presence of the riders, likely startled by the unfamiliar stink of their paws.