Hamsters' natural predators can be categorized into several groups, considering various risk factors and survival threats:

I. Primary Natural Predators
Snakes: Prey on hamsters through ambushes, with young hamsters being particularly vulnerable to being swallowed (common in wild habitats).
Birds of prey (owls, kestrels, etc.): Use their sharp eyesight and talons to launch aerial attacks on ground-dwelling hamsters.
Large predatory mammals:
Foxes: Nocturnal, with excellent sense of smell and hearing, primarily preying on small rodents.
Weasels (yellow weasels): Actively hunt hamsters and are highly aggressive.
Badgers: Omnivorous, may prey on hamsters during night activities.
II. Threats in Domestic Environments
House cats: Even when domesticated, they retain the instinct to hunt hamsters (highest risk level).
Rats: May compete with hamsters or attack their young.
Human activities: Habitat destruction or improper care (such as noise, sudden handling) can cause stress reactions.
III. Other Risk Factors
Noise and vibrations: Hamsters have sensitive hearing; loud sounds or cage vibrations can easily trigger panic.
Strong odors: Perfumes, cigarette smoke, etc., may irritate their respiratory tracts.
Note: Defense strategies against predators vary among hamster breeds (e.g., Campbell's dwarf hamsters are more prone to aggression, while Winter White dwarf hamsters tend to stay still to hide).