Final answer:
The condition with scabby, open sores on the bottom of a rabbit's hocks or paws is known as sore hocks or ulcerative pododermatitis and is caused by various factors, including unsuitable flooring and unsanitary conditions.
Step-by-step explanation:
The condition characterized by scabby, open sores on the bottom of a rabbit's hocks or paws is called sore hocks or ulcerative pododermatitis. This condition can be caused by hard or wire cage floors, obesity, unsanitary conditions, or genetic predisposition.
It is important to provide a dry, clean, and soft living space for rabbits to prevent this painful condition. Regular inspection of a rabbit's feet and early treatment of any signs of sore hocks are critical for their well-being.