Raje, S. S., Stewart, K. L. 1997. Group housing for male New Zealand White rabbits. Lab Animal 26(4), 36-37.

Establishing a group of 5 castrated male rabbits resulted in all but one rabbit suffering some kind of minor injury during a major conflict on day 6. Housing the two older animals together as a pair and the three younger ones together as a trio, with both groups keeping visual contact, was successful. The animals preferred an 18" PVC pipe as hiding place. Keeping the animals on the floor rather than in cages eliminated the problem of pododermatitis in the two older animals.