Marking

Unknown

Reference information

Name Unknown
Genotype ?/?
Mandatory picture? Yes
Frequency (all time) 7.5 % (3,722 rats)
Frequency (in the last 2 years) 7.52 % (152 rats)
Average lifespan (all causes) 17.5 months (♀: 18.1 months – ♂: 16.9 months)

Description

Undetermined or invisible marking (dilution, naked).