Answer:
Its heavy bones helped in reduction buoyancy
Explanation:
Indohyus Is an extinct animal and fossil studies and records have been discovered about this animal. It is known to be like the size of a cat and it was discovered it was an animal which survive mainly on land but could also survive in water for a certain duration of time. It has heavy bones which reduced its buoyancy and helped it to hide from predators on land and made it to stay there for a long time without floating to the surface of the water bodies.
