On a warm summer afternoon when your dog is playing in the garden they are at risk from inadvertently disturbing the local wildlife. Wasps and bees are the most common cause of insect stings in UK 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. Most stings therefore occur in midsummer around August.