Here's why:
* Navigation: Hamsters use their sense of smell to navigate their environment and find food, water, and their nests.
* Communication: They communicate with each other through scent markings, using urine and glands to leave messages for other hamsters.
* Identifying food and danger: Their sensitive noses allow them to distinguish between safe and dangerous food, and to detect potential threats.
While hamsters have other senses like touch, hearing, and sight, their sense of smell is considered their strongest and most important.