 There are concerns as to whether breeding hairless and tailless rats is ethical. The tail is vital for rats' balance and for adjusting body temperature. Tailless rats have greater risk of heat exhaustion, poor bowel and bladder control, falling from heights, and can be at risk for life-threatening deformities in the pelvic region like hind leg paralysis and megacolon. Similarly, hairless rats are less protected from scratches and the cold without their coat. Groups such as the NFRS prohibit the showing of these varieties at their events and forbid advertisement through affiliated services.
