Sorry guys should of made myself more clear...i'm soon going to be starting up a breeding unit..I plan to start out with only 3 breeding pairs, so I guess it's not exactly a "load" of kits, but say all three of them give birth around the same time...MAXIMUM that's 9 kits that will be put together when weaned, I will have two cages...one for the male kits and one for the female kits..so the cages will have kits from different litters...every breeder in the UK have a code assigned to each kit that's born..for example mine will be LC/10/F/01 (Breeder code/year/gender/kit number) so how do I know which kit is which if they're all together and if they look the same.
Will the marker come off? Cause yes I plan to sell the kits..so don't want someone walking away with a chin with ink on it's ear.