Rodent

A survey on the implementation of environmental health monitoring in mouse facilities in German-speaking countries

The health status of laboratory animals plays a decisive role not only for the health and welfare of the animals but also for the validity of study results. In recent years, there has been an increasing number of publications on...

Year Published: 2025Topics: Husbandry & ManagementAnimal Type: Mouse, Rodent

Citation: Mahabir, E., Schmidt, K., Kolbe, T. et al. 2025. A survey on the implementation of environmental health monitoring in mouse facilities in German-speaking countries. PLOS ONE 20(10), e0334442.

Sleep preferences in CD1 mice in a laboratory environment

This study investigates the preferences of CD1 mice in a lab environment for various sleeping enrichment options within their cages. Understanding the environmental factors that influence sleep behaviour is crucial for enhancing animal welfare in laboratory settings. We assessed two...

Year Published: 2025Topics: Environmental Enrichment, Husbandry & Management, Natural BehaviorAnimal Type: Mouse, Rodent

Citation: Mackay, F., Teggart, M. 2025. Sleep preferences in CD1 mice in a laboratory environment. Animal Technology and Welfare 24(2), 175–176.

Chew sticks, do mice really care?

There are various chewing enrichments on the market for small rodents. In this study we focused on comparing two types, T-Brick and Aspen to see which product enabled more natural chewing behaviours in several strains of mice. A rack of...

Year Published: 2025Topics: Environmental Enrichment, Natural BehaviorAnimal Type: Mouse, Rodent

Citation: Higginson, K. 2025. Chew sticks, do mice really care? Animal Technology and Welfare 24(2), 185–187.

Juvenile male rats form preferences based on strain when playing in groups but not in pairs

Like many young mammals, juvenile rats engage in rough-and-tumble play. Play occurs naturally both in wild and laboratory rats, making it a suitable, ethologically relevant behavior to investigate. In the laboratory, rats are typically housed and tested in dyads, despite...

Year Published: 2025Topics: Social Housing & CompanionshipAnimal Type: Rat, Rodent

Citation: Ham, J. R., Jaiswal, D., Waner-Mariquito, R. et al. 2025. Juvenile male rats form preferences based on strain when playing in groups but not in pairs. Frontiers in Behavioral Neuroscience 19.

Housing in a large open cage did not affect the phenotypic traits of obese male Zucker fa/fa rats when compared to IVC-housed rats, but improved the rats’ well-being

The housing of laboratory rats in cages with dimensions according to international standards for research animals can hardly be regarded as a stimulating environment, even when fulfilling the minimum requirements for environmental enrichment. Little is known about whether changes in...

Year Published: 2025Topics: Disease/Experimental Model, HousingAnimal Type: Rat, Rodent

Citation: Gudbrandsen, O. A. 2025. Housing in a large open cage did not affect the phenotypic traits of obese male Zucker fa/fa rats when compared to IVC-housed rats, but improved the rats’ well-being. Animals 15(18), 2687.

Environmental enrichment for laboratory rats and mice: Endocrine, physiological, and behavioral benefits of meeting rodents’ biological needs

Standard housing for laboratory rodents is characterized by cages that do not always provide an adequate environment to meet the animal’s behavioral needs. When animals are reared under impoverished conditions, negative states such as boredom and distress might arise. Environmental...

Year Published: 2025Topics: Environmental EnrichmentAnimal Type: Mouse, Rat, Rodent

Citation: Domínguez-Oliva, A., Hernández-Avalos, I., Bueno-Nava, A. et al. 2025. Environmental enrichment for laboratory rats and mice: Endocrine, physiological, and behavioral benefits of meeting rodents’ biological needs. Frontiers in Veterinary Science 12.

Rat boredom-like behaviour in a monotonous versus a varied foraging task: Effects of sensory variation

Evidence increasingly reveals that non-human animals in monotonous situations can show boredom-like states, distinctively manifesting as increases in both arousal-seeking, restless behaviour and low arousal, drowsy behaviour. However, task related boredom has been little investigated in animals, but could have...

Year Published: 2025Topics: Environmental EnrichmentAnimal Type: Rat, Rodent

Citation: Burn, C. C., Ng, K. H. T., Parker, M. O. 2025. Rat boredom-like behaviour in a monotonous versus a varied foraging task: Effects of sensory variation. Animal Cognition 28(1), 57.

Evaluation of the effects of enlarged housing on social play and reward seeking in rats

The legal minimum dimensions for laboratory rat housing prevent rats from fully performing their behavioural repertoire. In the regular cages, rats cannot run, climb, or even stand upright. The need to house rats in larger cages has been recognized internationally...

Year Published: 2025Topics: HousingAnimal Type: Rat, Rodent

Citation: Achterberg, E. J. M., Baars, A.-M. J. M., van Hal, D. A. et al. 2025. Evaluation of the effects of enlarged housing on social play and reward seeking in rats. Animals 15(18), 2757.

A study into viable wooden enrichment objects for Syrian Hamsters

It is known that due to the continual growth of their teeth, hamsters require a means by which to wear down their teeth and satisfy their natural desire to chew. Due to their foraging behaviour hamsters use their cheek pouches...

Year Published: 2020Topics: Environmental EnrichmentAnimal Type: Hamster, Rodent

Citation: Watson, H. 2020. A study into viable wooden enrichment objects for Syrian Hamsters. Animal Technology and Welfare 19(1), 86–88.

Alternative handling techniques to reduce anxiety in laboratory mice

The most common and widely used method to capture and transfer mice from cage to cage is to pick up and restrain the mouse by its tail. Recent studies at Liverpool University, however, have indicated that handling mice by their...

Year Published: 2020Topics: Handling, Human-Animal InteractionAnimal Type: Mouse, Rodent

Citation: Thorpe, E. 2020. Alternative handling techniques to reduce anxiety in laboratory mice. Animal Technology and Welfare 19(1), 76–78.