Q: Do cats have a good sense of smell?

Answer: Compared with ourselves, cats have greatly heightened sense of smell. In relation to the total brain size, that part of the brain concerned with smell is much greater in the cat then man. This allows that the cat to readily determine the identity of individuals and to detect their previous presence in an area by the scent markings they have left behind. Males can also discovered whether a female cat is an heat, and therefore likely to permit mating, by detecting certain sex pheromones which appear in her urine and vaginal secretion.