If a hob hasn't been looked after it can defo look a lot older.i picked up a big hob ferret 3 years ago of the side of a very busy road.he looked skinny,scabby and very old.thought he was on his way out.now after 3 years of living in a clean hutch,good diet,and more than his fair share of work and also being responsible for 3 litters,he's now the picture of health,I think he must be about 7ish.he'll defo be working this season and hopefully be lining my best Jill next year.