The US does not include within its animal welfare laws and regulations the rats, mice and birds who are subjected to research and testing ... methodology that eliminates to the greatest extent ...

Environmental enrichment is the alteration of animals' microenvironments to provide them with the opportunity to perform species-specific ... in laboratory rats and mice. Measurable parameters ...

There is a reason why most homeowners on shows like Hoarders deal with mice and rat infestations. Rodents love to seek out nesting materials like paper, fabric and insulation to burrow and keep ...