Meeting the nocturnal behavioral needs of pet hamsters to prevent chronic welfare problems.
Hamster welfare is systematically compromised by misalignment between the species' natural behavioral requirements and the care conditions typically provided. Hamsters are nocturnal animals kept by primarily diurnal owners, leading to forced handling during sleep periods that cause chronic stress. Cages sized for display and sale rather than welfare, with inadequate wheel diameter, create a situation where basic locomotor needs cannot be met. The scale of hamster keeping globally - tens of millions of animals - combined with the low welfare standards typical of the hobby means hamster welfare deserves significantly more attention than it receives.