||Albino (A/A Tyrp1b/Tyrp1b Tyrc/Tyrc)
- Low incidence of mammary tumours.
- Amyloidosis (40%) in older males.
- Aggressiveness observed in male stock from 6 weeks of age and female breeders.
- Fighting amongst males increases when cohorts are divided into smaller groups.
- High social dominance exhibited by males in presence of females resulting in high agression.
- Low mortality after neonatal thymectomy.
- Barbering from 7 weeks.