What specific biological traits place the Vizsla into the class Mammalia?

Answer

Being warm-blooded, having fur or hair, and nursing young with milk

Placement in the class Mammalia is determined by a suite of defining characteristics. Members of this class are endothermic, or warm-blooded, possess hair or fur during some stage of their lives, and have mammary glands that allow them to nurse their young with milk. These features are fundamental to the physiological experience of the dog.

What specific biological traits place the Vizsla into the class Mammalia?
taxonomyanimalclassificationbreedVizsla