How do dogs conserve body heat?\nOptions:\n- (A) their blood cells\n- (B) fur and fat\n- (C) their nails\n- (D) layers of fat\n- (E) Exfoliation\n- (F) sweating\n- (G) their fur\n- (H) their hair
Let's be accurate as possible and think first.
(G)
Mammals conserve body heat with their hair or fur.

Dogs, of course, are mammals.

Dogs conserve body heat with their fur.

.

The final answer: (G)