GENEVA (Reuters) - Keep your distance. Avoid eye contact. And even if it looks cute, never hug a Swiss cow. Responding to numerous "reports of unpleasant meetings between hikers and cattle" along Switzerland's picture-perfect Alpine trails this summer, the Swiss Hiking Federation has laid down a few ground rules. "Leave the animals in peace and do not touch them. Never caress a calf," the group's guidance, posted on the website www.swisshiking.ch, reads. "Do not scare the animals or look them directly in the eye. Do not wave sticks. Give a precise blow to the muzzle of the cow in the...