Classification (animals & utility): Three are traditional beasts of burden or riding animals; one is typically a household pet not used for draught or riding. Identify the odd one out.

Introduction / Context:
Animal classification often relies on common human uses. In many cultures, camels, horses, and bullocks (oxen) serve as riding or draught animals. Cats are widely kept as pets and are not used for riding or hauling. The goal is to isolate the non-draught, non-riding animal.

Given Data / Assumptions:

• Camel: riding/load-carrying in deserts.
• Horse: riding and hauling historically.
• Bullock: draught animal for carts/ploughs.
• Cat: primarily a companion animal.

Concept / Approach:
Group by human utility in transport/agriculture: draught/riding vs pet. Select the one that does not fit the functional category shared by the others.

Step-by-Step Solution:

Verification / Alternative check:
Check size/capability. Only the cat lacks the physical suitability for riding/hauling tasks.

Why Other Options Are Wrong:

Common Pitfalls:
Overgeneralizing “working animals” to include pest control by cats; the set focuses on riding/draught functions.

Final Answer:
Cat