On a warm summer afternoon when your cat is playing in the garden they are at risk from inadvertently disturbing the local wildlife. Wasps and bees are a common cause of insect stings in pets. However ants may also bite (or "sting") pets. Bees and their cousins, bumblebees, wasps, hornets and ants, do not usually sting unless stepped on, touched, or molested. They are usually not active at temperatures below 55.4°F or on rainy days.