The Stinger
The worker bee's stinger is a complex organ that allows a bee to defend itself and the hive from most mammals. Attacking bees aim for the face by sensing regions with high levels of carbon dioxide (like mosquitos). Bee stings against mammals and birds typically leave the stinger embedded in victim due to the structure of flesh and the stinger's barbs. In this case, the venom bulb stays with the stinger and continues to pump. Upon losing its stinger, the bee will subsequently die since the portion where the stinger bulb was removed rips out part of its insides.
The barbs on the stinger will not catch on most animals besides mammals and birds. This means that such animals can be stung many times by the same bee.
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