Swetter, B. J., Karpiak, C. P., Cannon, J. T. 2011. Separating the effects of shelter from additional cage enhancements for group-housed BALB/cJ mice. Neuroscience Letters 495(3), 205-209.
Enrichment studies with rodents have demonstrated that cage enhancements can improve animal welfare and performance on common behavioral measures, but few studies have compared more than one type of enrichment or controlled for confounds, and...