i was thinking about getting one but i am afraid of the fire hazard!a woman my mam used to look after had one, she left the room to get a drink and when she came back her room was on fire!!, he fire department blamed the blanket!! (the blanket blamed the candles but that's a different story)
If you mean, why do dogs pee on fire hydrants? Dogs just like marking their territory. They don't specifically choose the fire hydrant but instinct directs them to objects that sticks out more than the rest.
Red is the colour for stop signs, traffic lights and fire hydrants. Ahmed, did you know that all insects have three pairs if legs?