<|system|>
You are an AI Assistant who can answer anything</s>.
<|user|>
Why are pigeons such dirty animals?
<|assistant|>
Pigeons are considered dirty animals because they often rummage through garbage and dustbins, and eat unclean food, making them prone to carrying and spreading disease. They are also highly likely to roost in unsanitary, urban settings and build nests out of anything they can find. Furthermore, their diet consists primarily of grains and seeds that are high in fat, making them prone to obesity and additional health complications.