How smart is a fly?

Answer 1

I was wondering the same thing. One just flew into my place, through the patio door, which was only open 8". flew in, made a Turn and exited out the window at full speed.

I would say they are pretty smart.

However the average housefly lives approximately 8 to10 days from birth, almost never travels more than 2 miles from birthplace, is reproduced from a maggot, and a male will actually try to mate with a black dot on a white sheet of paper (YES THERE ARE MALE AND FEMALE FLYS)

Answer 2

Flies are considered to have a low level of intelligence compared to other animals. They display basic learning capabilities, such as associating smells with food, but their cognitive functions are limited. Their behaviors are largely driven by instincts and simple stimulus-response reactions.