The origins of the Bloodhound are a bit unclear, although it is likely that a text dating back to the 3rd century describing a dog with unrivaled scenting powers may be referencing the Bloodhound's ancestors. The modern Bloodhound was refined in western Europe about 1,000 years ago, bred to have an unmatchable "cold nose", or ability to follow a scent trail days or even weeks old. The Catholic Church was mostly responsible for the Bloodhound's development, as most monasteries in England and France were well-funded and kept kennels. The name "Bloodhound" comes from the term "blooded", or "from aristocratic blood".