A feisty little Argentine ant (Linepithema humile) attacks a much larger fire ant (Solenopsis invicta).  Both species co-exist naturally in subtropical South America, but in the southern United States where both have been accidentally introduced, the fire ant has displaced the Argentine ants.  Austin, Texas, USA
{"Image Make": "Canon", "Image Model": "Canon EOS 20D", "Image DateTime": "2006:11:29 20:38:19", "Image ExifOffset": "102", "EXIF ExposureTime": "1/200", "EXIF FNumber": "13", "EXIF ExposureProgram": "Manual", "EXIF ISOSpeedRatings": "400", "EXIF DateTimeOriginal": "2006:11:20 14:31:08", "EXIF DateTimeDigitized": "2006:11:20 14:31:08", "EXIF ShutterSpeedValue": "125237/16384", "EXIF ApertureValue": "15157/2048", "EXIF ExposureBiasValue": "0", "EXIF MeteringMode": "Average", "EXIF Flash": "Flash fired, compulsory flash mode", "EXIF FocalLength": "65", "EXIF ColorSpace": "sRGB", "EXIF ExposureMode": "Manual Exposure", "EXIF WhiteBalance": "Auto", "EXIF SceneCaptureType": "Standard"}