A nose is a body part which allows animals to smell things. The nose also helps animals breathe. It has parts that make it work and send messages to the brain. The nose's parts include smell receptors and nerve connectors to receptors. In humans, the nose is on the front of the face. The power of the nose varies for animals. For example, dogs have a stronger sense of smell than human. It is part of the respiratory system which is the system in animals that help them to breathe. Your nose is very powerful and can remember up to 50,000 different scents.