Why do blue heelers also known as Australian cattle dogs kill rabbits and raccoons?

Blue Heelers, or Australian Cattle Dogs, have a strong herding instinct and are bred to manage livestock, making them highly energetic and driven. Their natural prey drive can lead them to chase and kill smaller animals like rabbits and raccoons, seeing them as potential threats to their herd or territory. Additionally, their intelligence and agility enable them to effectively capture and control these animals.