Allergies in pets are as common as they are with humans. While many humans tend to sneeze and get itchy eyes, pets are frequently affected in their skin. Signs of itchy skin include licking the feet, scratching, development of hot spots, darkening of the skin, and odor. Some pets also have eye drainage and coughing. There are many ways to manage allergies in pets, including oral medication, injectable medication, allergy testing, and hypoallergenic diets.