Human anatomy is the study of the human body structure, while animal anatomy focuses on different species. Both overlap but differ in design and adaptation.

Key Differences:

• Structure: Humans are upright bipeds; animals can be bipeds or quadrupeds.
  
• Respiration: Humans use lungs; fish use gills; insects have tracheae.
• Circulation: Humans have a closed system; some animals have open circulatory systems.
• Adaptations: Animal anatomy changes based on habitat - birds have hollow bones for flight; fish have fins for swimming.

Importance: Comparative anatomy reveals evolutionary links and helps in veterinary science, biology, and medicine.