Correct Option
The correct option isDog
Explanation
Animals are classified into three primary categories based on their dietary habits: herbivores (plant-eaters), carnivores (meat-eaters), and omnivores. Omnivores are organisms that have the physiological ability to derive energy and nutrients from both plant and animal matter.
Option Analysis
- Buffalo: Incorrect. Buffaloes are ruminant herbivores. Their digestive systems are specialized for fermenting and digesting plant material, primarily grass and fodder.
- Dog: Correct. Dogs are classified as omnivores. While they belong to the order Carnivora, their anatomy and physiology have adapted to digest and utilize a diet consisting of both animal protein and plant-based foods (starches and vegetables).
- Giraffe: Incorrect. Giraffes are browsing herbivores. They feed exclusively on the leaves, fruits, and flowers of woody plants, such as Acacia species.
- Elephant: Incorrect. Elephants are mega-herbivores. Their diet consists entirely of vegetation, including grasses, leaves, bamboo, bark, and roots.
Key Takeaway
Omnivores possess a flexible diet allowing them to consume both plant and animal matter, distinguishing them from herbivores (plants only) and carnivores (meat only).