Stauffacher, M. 2000. Refinement in rabbit housing and husbandry. In: Progress in the Reduction, Refinement and Replacement of Animal Experimentation. Balls, M., Van Zeller, A. M., Halder, M. (eds), 1269-1277. Elsevier, Amsterdam.

except for locomotor play, rabbits do not use space per se; they use specific resources and structures depending on their motivation state. .. Minimum cage dimensions have to be deduced from the minimum enrichment requirements which have to be incorporated into the cage (or pen) in a way the rabbits can cope with successfully. Paired individuals rested in body-contact with their partners for 13-58% of their total individual resting time.